Bay count, what the slot accepts, and whether it clones without a computer

The best drive docks for 2026

A dock is an open bay you drop a drive into, and it exists because pulling a drive out again ought not to involve a screwdriver. The first question is what it accepts: nearly all take both 3.5-inch and 2.5-inch SATA drives in the same slot, and some add an M.2 position for NVMe or SATA modules — read which protocol that position supports, because the key notch looks the same either way. The second is the bay count. A single-bay dock reads one drive at a time; a dual-bay dock reads two, and this is where the notable feature appears. Offline cloning copies one drive onto another with a button and no computer attached, and the rules are published: the destination has to be at least as large as the source, the copy runs sector by sector, and everything already on the destination is overwritten. It is a duplication tool rather than an arrangement for keeping data safe, and the maker's instructions govern how it is used. The interface follows: the USB generation with its stated rate, the connector, and whether UASP is supported. Power is always external on a dock that takes 3.5-inch drives, and the adapter is part of the footprint. Then the small things that decide daily use: a power switch, activity lights per bay, whether the slot grips a drive or lets it lean, and dust caps for an empty bay. We compare bay count, supported drive sizes and interfaces, solid-state slot support, offline cloning, interface standard and stated link rate, connector type, UASP support, power supply and per-bay controls.

The ones worth keeping in the drawer

1. 

   FIDECO dual-bay SATA dock, USB 3.0 at 5 Gbps, offline clone on a five-second press, 2 × 12 TB

   The cheapest dock in this hub, and the one that tells you exactly how the copy is started: hold Clone for five seconds until the light blinks, with no computer attached.

   Bay count

   Two — stated in the third and fourth bullets, which describe two drives put into their respective slots and two drives supported at the same time

   Supported drive sizes

   2.5-inch and 3.5-inch — stated in the title and in the fourth and fifth bullets, which describe the flexibility of connecting two drives of either size to a computer

   Supported drive interfaces

   SATA I, II and III, hard discs and solid-state drives — stated in the fourth bullet, with the first adding that only SATA drives and SSDs are supported

   Solid-state slot support

   Not published on the listing — no M.2 position of any kind is named. Solid-state drives are supported in the two SATA bays and no separate slot exists

   Offline cloning

   Stated — the third bullet says two drives are put in their slots and the Clone button held for five seconds until the LED blinks, and that the copy is completed without a computer. It is the only listing on this shelf to publish both the duration of the press and the signal that confirms it

   Interface standard

   USB 3.0 — stated in the title and in the second bullet

   Stated link rate

   Up to 5 Gbps — stated in the second bullet as a very fast data transfer speed over USB 3.0

   Connector type

   Not published on the listing — no socket and no cable is named in any bullet

   UASP support

   Not published on the listing — UASP is not named anywhere. Fourteen of the nineteen listings in this lot publish it, so the silence here is worth noticing rather than assuming

   Power supply

   Not published on the listing — no adapter, no voltage and no current is named, on a dock that accepts two 3.5-inch drives at once and cannot run from a USB port

   Per-bay controls

   Not published on the listing — no power switch and no per-bay light is named. The third bullet describes a single LED that blinks when the clone starts

   Amazon reference

   B08291CB6J (same reference on 6 Amazon marketplaces)

   EAN

   0751450850409

   • Publishes the length of the button press and the signal that confirms it
   • Two bays at the lowest price in this hub
   • No power supply named at all, on a dock built for two 3.5-inch drives

   Best for: Reading a pile of old SATA drives one after another, on a desk where the copy button is the reason for buying rather than the transfer rate.

   ≈ $25 / £30 / 24 €

   Check price on Amazon
2. 

   UGREEN dual-bay SATA dock, USB 3.0 at 5 Gbps, offline clone, UASP, S.M.A.R.T. and TRIM, 2 × 16 TB

   A two-bay dock that puts the cloning rule in bold inside its own first bullet — the destination has to exceed the source — and publishes three protocols where most docks publish one.

   Bay count

   Two — stated in the title and in the second bullet, which describes simultaneous operation of two 2.5-inch or 3.5-inch drives for synchronous data transfer

   Supported drive sizes

   2.5-inch and 3.5-inch — stated in the first and second bullets

   Supported drive interfaces

   SATA hard discs and solid-state drives — stated in the first and second bullets. No SATA revision is named

   Solid-state slot support

   Not published on the listing — no M.2 position is named. Solid-state drives are supported in the two SATA bays and no separate slot exists

   Offline cloning

   Stated — the first bullet describes fast copying between two drives at a single button press with no computer connected, and adds in a marked note that the capacity of destination drive B must exceed that of source drive A

   Interface standard

   USB 3.0 — stated in the title and in the third bullet

   Stated link rate

   Up to 5 Gbps — stated in the title and in the third bullet, which calls it a theoretical transfer speed

   Connector type

   Not published on the listing — no socket and no cable is named in any bullet

   UASP support

   Stated — the third bullet names UASP, S.M.A.R.T. and TRIM together as the protocols supported. It is one of two docks on this shelf to name all three

   Power supply

   Not published on the listing — no adapter, no voltage and no current is named, on a dock stated to run two 3.5-inch drives at once

   Per-bay controls

   Not published on the listing — no power switch and no per-bay indicator is named in any bullet

   Amazon reference

   B0FPM32XNZ (same reference on 5 Amazon marketplaces)

   EAN

   6941876284924

   • Puts the capacity rule for cloning inside the cloning bullet, in a marked note
   • UASP, S.M.A.R.T. and TRIM all three published
   • No power supply named, on a dock built for two 3.5-inch drives

   Best for: Moving a system onto a larger drive, where the capacity rule in the first bullet is exactly the thing that has to be got right.

   ≈ 24 €

   Check price on Amazon
3. 

   xiaobi dual-bay SATA dock, USB-C and USB-B, USB 3.0 at 5 Gbps, offline copy, RGB switch

   The dock that describes its own failure state — four blue lights blinking means the copy did not work — and the only one here with a switch to turn its lighting off.

   Bay count

   Two — stated in the title and in the first bullet, which describes two SATA drive interfaces alongside a Type-C socket, a USB-B socket and separate power and RGB buttons

   Supported drive sizes

   2.5-inch and 3.5-inch — stated in the title and in the third bullet

   Supported drive interfaces

   SATA hard discs and solid-state drives — stated in the third bullet. No SATA revision is named

   Solid-state slot support

   Not published on the listing — no M.2 position is named. Solid-state drives are supported in the two SATA bays and no separate slot exists

   Offline cloning

   Stated — the second bullet describes copying from one SATA drive to another with a switch and no software or tools, and adds three marked notes: use a larger destination, disconnect the PC during the copy, make sure the destination capacity is at least as large as the source, and read four blinking blue LEDs as a failed copy

   Interface standard

   USB 3.0 — stated in the fourth bullet as supporting extremely fast USB 3.0 data transfer

   Stated link rate

   Up to 5 Gbit/s — stated in the fourth bullet

   Connector type

   A Type-C socket and a USB-B socket on the dock, with a USB-B to USB-C cable and a USB-A adapter supplied — stated in the first and sixth bullets. It is the only dock on this shelf to publish both its sockets and its cable

   UASP support

   Not published on the listing — UASP is not named anywhere in the six bullets. Fourteen of the nineteen listings in this lot publish it, so the silence is worth noticing

   Power supply

   Not published on the listing — no adapter, no voltage and no current is named, on a dock stated to take two 3.5-inch drives

   Per-bay controls

   Separate power and RGB buttons are stated in the first bullet, with the RGB switch on the rear named again in the fifth. Neither is per-bay: no individual bay switch and no per-bay indicator is published

   Amazon reference

   B0GGR3P52T (same reference on 6 Amazon marketplaces)

   EAN

   0635393178823

   • Describes the failure signal, four blinking blue lights, which nothing else in this lot does
   • Publishes both its sockets and the cable and adapter supplied
   • Two capacity figures in one bullet, 16 TB each and 20 TB for a single drive

   Best for: A desk where drives are copied often and the operator wants to know from across the room whether it worked.

   ≈ $35 / £27 / 25 €

   Check price on Amazon
4. 

   BENFEI dual-bay SATA dock, USB 3.0 at 5 Gbps, offline clone on a three-second press, 12 V/2.5 A supply

   The dock that publishes the two things most of this shelf leaves out — a 12 V/2.5 A supply rated for two spinning drives, and a power switch to protect them while they are fitted.

   Bay count

   Two — stated in the title and in the first bullet, which describes reading, writing and transferring in parallel between two 2.5-inch or 3.5-inch drives

   Supported drive sizes

   2.5-inch and 3.5-inch — stated in the title and in the first bullet

   Supported drive interfaces

   SATA hard discs and solid-state drives — stated in the title and in the first bullet. No SATA revision is named

   Solid-state slot support

   Not published on the listing — no M.2 position is named. Solid-state drives are supported in the two SATA bays and no separate slot exists

   Offline cloning

   Stated — the second bullet says the CLONE button is held for three seconds to transfer all data from the source drive to the destination without a computer, and notes that the destination must be equal to or larger than the source

   Interface standard

   Two designations are published: the title says USB 3.0 and the third bullet says USB 3.1 Gen 1. Both are printed and neither is withdrawn

   Stated link rate

   Up to 5 Gbit/s — stated in the title and in the third bullet

   Connector type

   Type-C — stated in the title as a USB-C docking station. No cable is named in any bullet

   UASP support

   Stated — the third bullet names UASP, the USB Attached SCSI Protocol, and claims it speeds transfers by up to 20 % against conventional USB 3.0. The same maker’s 2.5-inch enclosure on the enclosures shelf of this site puts the figure at 70 %

   Power supply

   A dedicated 12 V/2.5 A adapter — stated in the fourth bullet, which says it gives a stable supply to both bays and reliable operation even with two demanding 3.5-inch hard discs. It is the higher of the two current ratings published on this shelf

   Per-bay controls

   A single integrated power switch is stated in the fourth bullet, described as protecting the drives while they are connected and removed, with an instruction to switch the unit off before fitting or removing a drive. No per-bay switch and no per-bay indicator is published

   Amazon reference

   B0GTVMFGPT (same reference on 5 Amazon marketplaces)

   EAN

   6971785945371

   • Publishes the power supply with both figures, 12 V and 2.5 A
   • A power switch, with an instruction saying when to use it
   • USB 3.0 in the title and USB 3.1 Gen 1 in the bullets, with nothing reconciling them

   Best for: Two 3.5-inch mechanisms running at once, where the supply rating and the switch are the reasons to pay more than the cheaper docks here cost.

   ≈ 24 €

   Check price on Amazon
5. 

   GRAUGEAR single-slot M.2 dock for NVMe and SATA, RTL9210B, 2230 to 22110, active fan

   The one dock in this hub with no SATA bay at all: a single M.2 slot with active cooling, the only listing anywhere in this lot to accept a 22110 module.

   Bay count

   One — a single M.2 slot. No 2.5-inch or 3.5-inch bay exists, which makes it the only dock on this shelf that will not take a conventional drive at all

   Supported drive sizes

   M.2 modules only — the third bullet names all common M.2 formats from 2230 to 2280 and adds 22110, which no other listing in this lot mentions

   Supported drive interfaces

   NVMe M.2 SSDs in M-key and SATA NGFF SSDs in M+B key — stated in the second bullet, which credits the RTL9210B chipset with the dual support

   Solid-state slot support

   The whole device is one — the M.2 slot is the only position, and it accepts both the NVMe and the SATA protocol. Every other dock on this shelf has SATA bays and, in one case, an M.2 slot alongside them

   Offline cloning

   Not published on the listing — no clone button and no copy function is named in any of the five bullets. With a single slot there is no second drive to copy to

   Interface standard

   USB with the RTL9210B chipset — stated in the second bullet. The USB generation is not named in words; the first bullet gives the rate instead

   Stated link rate

   Up to 10 Gbit/s for a PCIe 3.0 x2 NVMe SSD, and up to 6 Gbit/s for a SATA SSD — both stated in the first bullet, which is the only listing in this lot to publish a separate figure for each protocol

   Connector type

   Not published on the listing — no Type-C, Type-A or cable is named in any bullet

   UASP support

   Not published on the listing — UASP is not named anywhere. Fourteen of the nineteen listings in this lot publish it

   Power supply

   Not published on the listing — no adapter, voltage or current is named. An M.2 module and a small fan are a modest load, and the page does not say whether the dock runs from the lead

   Per-bay controls

   Not published on the listing — no switch and no indicator is named. The third bullet supplies an acrylic cylinder for storing and protecting an M.2 drive, which is a case rather than a control

   Amazon reference

   B0BGJKVSKT (same reference on 6 Amazon marketplaces)

   EAN

   4260746550467

   • A fan inside, which nothing else in this lot has
   • Accepts 22110 modules, the only listing here to name that length
   • No SATA bay at all, so a 2.5-inch or 3.5-inch drive will not go near it

   Best for: A desk where M.2 modules are read and imaged one after another and the drive has to stay cool while it happens.

   ≈ 38 €

   Check price on Amazon
6. 

   Inateck dual-bay SATA dock, USB 3.0 with UASP, offline clone, RGB, 2 × 20 TB, 12 V/3 A supply

   The dock with the biggest bays and the biggest supply on this shelf — two 20 TB drives and a 12 V/3 A adapter — and lights that say which of those two states the drives are in.

   Bay count

   Two — stated in the title as a dual bay docking station taking 2 × 20 TB drives

   Supported drive sizes

   2.5-inch and 3.5-inch — stated in the title and in the fourth bullet, which says the product is compatible with almost all types of 2.5-inch and 3.5-inch HDDs and SSDs on the market

   Supported drive interfaces

   SATA hard discs and solid-state drives — stated in the title. No SATA revision is named

   Solid-state slot support

   Not published on the listing — no M.2 position is named. Solid-state drives are supported in the two SATA bays and no separate slot exists

   Offline cloning

   Stated — the second bullet says the docking station is equipped with offline cloning and that a computer connection is not required. No press duration, no capacity rule and no failure signal is published

   Interface standard

   USB 3.0 — stated in the title and in the third bullet, which adds UASP support and hot-swapping

   Stated link rate

   Not published on the listing — no figure in gigabits per second appears in any bullet. The third bullet says the dock supports not only USB 3.0 but also UASP, which it credits with even faster transfer speeds, and gives no number. It is the only dock on this shelf that publishes no rate at all

   Connector type

   A USB 3.0 Type-C data cable is listed in the fifth bullet as part of the package. The socket on the dock itself is not described

   UASP support

   Stated — the third bullet names UASP alongside USB 3.0 and hot-swapping. No percentage and no condition is published

   Power supply

   A 12 V/3 A adapter — listed in the fifth bullet as part of the package. It is the highest current rating published on this shelf

   Per-bay controls

   Not published on the listing as per-bay — the first bullet describes RGB LEDs that blink quickly when a drive is working and change to a breathing pattern when the drives are idle or removed. No switch and no individual bay control is named

   Amazon reference

   B0D1QKZWRS (same reference on 6 Amazon marketplaces)

   EAN

   6976521110525

   • Two 20 TB bays, the highest capacity claim on this shelf
   • A 12 V/3 A adapter, the largest supply published in this hub
   • No link rate figure anywhere, alone among the seven docks here

   Best for: Two large 3.5-inch mechanisms run hard at the same time, where the supply rating is the part that has to be right.

   ≈ $40 / 43 €

   Check price on Amazon
7. 

   SABRENT flat dock for M.2 NVMe and 2.5/3.5-inch SATA, USB-C at 10 Gbps, offline clone, M.2 heatsink

   The only dock in this hub that reads an M.2 module and a conventional SATA drive at the same time, which is exactly the pair of things a machine being retired usually contains.

   Bay count

   Two positions of different kinds — one M.2 slot and one SATA bay, described in the first bullet as supporting M.2 PCIe NVMe SSDs and 2.5-inch or 3.5-inch SATA SSDs and HDDs at the same time. The third bullet says it can be run in single-drive or dual-drive mode

   Supported drive sizes

   2.5-inch and 3.5-inch SATA drives, and M.2 modules — stated in the title and in the first bullet. The individual M.2 lengths are not published on the listing

   Supported drive interfaces

   M.2 PCIe NVMe, and SATA SSDs and hard discs — stated in the title and in the first bullet. Whether the M.2 position also accepts M.2 SATA modules is not published

   Solid-state slot support

   An M.2 slot with a heatsink and an integrated thermal pad — stated in the title and in the fourth bullet, which gives keeping the hardware cool and protected as the reason. It is one of two docks on this shelf with an M.2 position and the only one that pairs it with a SATA bay

   Offline cloning

   Stated — the first and third bullets both describe cloning offline between two drives, with the third adding that the dock can be operated in single-drive or dual-drive mode for transfers. No press duration and no capacity rule is published

   Interface standard

   USB 3.2 Gen 2 — stated in the second bullet, which adds that the dock is backward compatible

   Stated link rate

   Up to 10 Gbps with a suitable USB host port — stated in the second bullet. The host-port clause is the only condition of its kind published on this shelf, and it is one of three in the whole lot

   Connector type

   Type-C — stated in the title and in the first bullet, which calls it a USB Type-C flat docking station. No cable is named

   UASP support

   Stated — the second bullet names both TRIM and UASP, giving reliability and performance as the reasons

   Power supply

   Not published on the listing — no adapter, voltage or current is named, on a dock that accepts a 3.5-inch drive and therefore cannot run from a USB port alone

   Per-bay controls

   Not published on the listing as per-bay — the fourth bullet names LED indicators keeping the user informed during all operations, and no switch and no individual position control is described

   Amazon reference

   B0BX4LSHS4 (same reference on 6 Amazon marketplaces)

   EAN

   0840025259089

   • Reads an M.2 module and a SATA drive at the same time, which nothing else here does
   • Writes the host-port condition into its own 10 Gbps claim
   • No power supply named, on a dock that accepts a 3.5-inch mechanism

   Best for: Retiring a computer, where the M.2 system drive and the SATA data drive both have to be read and one copied to the other.

   ≈ $63 / £66 / 68 €

   Check price on Amazon