The USB link behind the socket sets the ceiling of the Ethernet port · review
ASUS USB-C2500 V2, 2.5-gigabit adapter with its Windows driver on board review
A 2.5-gigabit adapter whose Amazon.com title says USB Type-A while ASUS's own specification says USB 3.0 Type-C — the one line to settle before ordering.
The title reads “ASUS USB-C2500 V2 - USB Type-A 2.5G Base-T Ethernet Adapter with Backward Compatibility of 2.5G/1G/100Mbps”. Five bullets follow: 2.5 Gbit/s networking; plug and play on macOS and Linux with an integrated driver installing on Windows in one click; a compact body for travel; compatibility with a USB 3.0 port and with Windows, Mac OS X and Linux, named for upgrading a NAS, a laptop or a desktop; and an aluminum case with a nylon-braided cable. The description adds that 2.5 Gbit/s is 2.5 times a standard gigabit adapter.
Two descriptions of one plug
ASUS’s specification page for the USB-C2500 V2 gives a USB 3.0 Type-C input, a 70 × 30 × 16.5 mm (2.8 × 1.2 × 0.65 in) body weighing 30 g (1.1 oz), and a two-color LED for 1G and 2.5G links. The Amazon.com title calls the same product a USB Type-A adapter. A machine with only one kind of socket will accept only one of the two, so this is the line to settle — on the listing photographs — before anything else.
The driver it carries
The second bullet does something most adapters on this shelf leave vague: it says how the driver gets there. On Windows it is integrated in the adapter and installs with one click; on macOS and Linux the adapter is plug and play. No chip is named, here or on ASUS’s page, so the driver cannot be looked up independently.
Where the 2.5G stops
The title names the fallback: 2.5G, 1G and 100 Mbit/s. Against a gigabit switch the link comes up at a gigabit and the LED says so; the 2.5 needs a 2.5GBASE-T port at the other end and a cable that carries it — Category 5e is enough over a normal run.
Before ordering
Look at the plug in the listing photographs and at the socket on the machine. ASUS says Type-C; the title says Type-A.
Where it holds up, and where it stops
Strengths
Names 2.5G Base-T and the fallback rates, 1G and 100 Mbit/s, in the title
Says how the driver arrives: built into the adapter for a one-click install on Windows, plug and play on macOS and Linux
An aluminum case and a nylon-braided cable, both stated, and a dual-color LED for the link rate on ASUS's page
Compromises
The Amazon.com title says USB Type-A; ASUS's specification page says USB 3.0 Type-C
No chipset named, on the listing or on ASUS's page
Operating systems named without versions
Specifications
USB generation
USB 3.0 — on ASUS's specification page and in the fourth bullet, which names compatibility with a USB 3.0 port
Stated link rate
Not published — no figure in gigabits per second is attached to the USB side; the rates on the page, 2.5G, 1G and 100 Mbit/s, belong to the Ethernet socket
Connector type
Disputed — ASUS's specification page gives a USB 3.0 Type-C input; the Amazon.com title calls it a USB Type-A adapter. The photographs on the listing are the thing to check
Ethernet port speed standard
2.5GBASE-T, with backward compatibility to 2.5G, 1G and 100 Mbit/s — stated in the Amazon.com title; ASUS gives 100, 1000 and 2500 Mbit/s
Controller family
Not published — no chip is named on the listing or on ASUS's specification page
Stated operating system support
Windows, Mac OS X and Linux — stated in the second and fourth bullets without versions: plug and play on macOS and Linux, with a driver integrated in the adapter for a one-click install on Windows
Housing material
Aluminum — stated in the fifth bullet, with a nylon-braided cable
Cable arrangement
A nylon-braided cable — stated in the fifth bullet; no length is printed. ASUS gives the adapter as 70 × 30 × 16.5 mm (2.8 × 1.2 × 0.65 in) and 30 g (1.1 oz)
Amazon reference
B0BW8FTT2T
EAN
4711636101585
On Amazon.com
Amazon.com had an offer at $50 on October 26, 2026.
The questions that come up before an order
Is it Type-A or Type-C?
ASUS's own specification page gives a USB 3.0 Type-C input. The Amazon.com title calls it a USB Type-A adapter. One of the two is wrong, and the listing photographs and the plug on the machine it is for are what settle it before the order.
Does it need a driver?
On Windows, yes, but it carries it: the second bullet describes a driver integrated in the adapter that installs with one click. On macOS and Linux the listing says plug and play.
What happens on a gigabit switch?
It negotiates down. The title names backward compatibility with 1G and 100 Mbit/s, and ASUS's page adds an LED that shows whether the link came up at 1G or 2.5G.
Our score
8.4/ 10
A tidy 2.5-gigabit adapter with its driver on board and its fallback rates stated, sold under a title that names a different plug from ASUS's own specification. Check the plug before ordering; the rest is clear.
Against the rest of the network and storage gear
This network and storage gear share the category and the price bracket. Only what each one states is shown; an incomplete column would mislead.
Model
Price
USB generation
Stated link rate
Connector type
Ethernet port speed standard
ASUS USB-C2500 V2, 2.5-gigabit adapter with its Windows driver on board
$50
USB 3.0 — on ASUS's specification page and in the fourth bullet, which names compatibility with a USB 3.0 port
Not published — no figure in gigabits per second is attached to the USB side; the rates on the page, 2.5G, 1G and 100 Mbit/s, belong to the Ethernet socket
Disputed — ASUS's specification page gives a USB 3.0 Type-C input; the Amazon.com title calls it a USB Type-A adapter. The photographs on the listing are the thing to check
2.5GBASE-T, with backward compatibility to 2.5G, 1G and 100 Mbit/s — stated in the Amazon.com title; ASUS gives 100, 1000 and 2500 Mbit/s
Not published on the listing — the page names USB-C and Thunderbolt 3, 4 and 5 hosts, and USB-PD 3.1 for the charging socket, and never gives a USB data generation for the adapter itself
Not published on the listing for the host link — no figure in gigabits per second is attached to the USB side. The only rate on the page, up to 2500 Mbit/s, belongs to the Ethernet socket
USB-C, on a braided pigtail lead, with a second USB-C socket on the body for power. The second bullet states that the built-in USB-C power socket supports charging to 140 W under USB-PD 3.1 for compatible machines, naming a 16-inch MacBook Pro as an example, and that charging and the 2.5-gigabit connection run at the same time
Up to 2500 Mbit/s — stated in the first bullet, described as a good deal more than a conventional one-gigabit adapter and named for 4K and 8K streaming, gaming, video calls and file transfers on a local network. No BASE-T designation is printed
Not published on the listing — no generation and no USB number appears in the title or in any of the five bullets. The connector is named as USB-C throughout and the link behind it is never described
Not published on the listing for the host link — the only rate on the page, up to 2500 Mbps, belongs to the Ethernet socket
USB Type-C — stated in the title and in all five bullets, named for machines and phones with a Type-C socket and no Ethernet of their own
Up to 2.5 Gbit/s — stated in the title and first bullet; the third bullet presents it as an upgrade from a 1 Gbit/s network when paired with 2.5-gigabit switches and routers. No BASE-T designation is printed
USB 3.0 — stated in the title and in the second bullet, with the third adding backwards compatibility with USB 2.0 and 1.1
5 Gbit/s — stated in the third bullet as the USB 3.0 bus over which the gigabit Ethernet is carried. It is one of only two pages on this shelf that put a figure on the host link rather than on the socket
USB Type-C — stated in the title, which names a USB-C to Ethernet adapter and then describes the link behind it as USB 3.0
10/100/1000 Mbit/s gigabit Ethernet — stated in the third bullet, with the fourth naming IEEE 802.3, IEEE 802.3u and IEEE 802.3ab and adding support for IEEE 802.3az energy-efficient Ethernet. The second bullet attaches a condition: Category 6 cable or better if the gigabit is to be had
What separates the models, in network and storage gear
If price decides: BENFEI USB-C to gigabit Ethernet adapter, driverless on three systems, at $8.
The buyer this one serves, among network and storage gear
A laptop or NAS with a USB 3.0 port of the right shape, on a 2.5-gigabit switch, where a driver that installs itself on Windows saves a download.
What this one costs among network and storage gear
A reference exists on these Amazon stores: France, Germany, Italy, Spain, United Kingdom, United States. Listed is not the same as in stock — availability changes daily.
Details checked on October 26, 2026.
Sources
Specifications: the manufacturer sheet for network and storage gear and the matching Amazon product page. Prices and availability: Keepa. Every figure on this page names its source.
USB 3.0 · 5 Gbit/s bus stated · USB-C plug · 10/100/1000 Mbit/s · 802.3, 802.3u, 802.3ab and 802.3az named · Category 6 asked for · 18-month warranty
A gigabit adapter that names four Ethernet standards and then asks for Category 6 cable if the gigabit is to be had, which is the chain stated by the maker rather than by us.
Best for: A laptop with a Type-C socket and no Ethernet, on a network already wired with Category 6 or better, where the gigabit is the whole requirement.
up to 2500 Mbit/s · USB-C · a second USB-C socket for charging to 140 W under USB-PD 3.1 · aluminum body · braided pigtail lead · controller maker named without a model
A 2.5-gigabit adapter that gives the single Type-C socket of a laptop back by carrying up to 140 W of charging alongside the network.
Best for: A modern laptop with a single Type-C socket that has to be charged and wired at the same time, on a desk where the adapter stays plugged in.
USB 3.0 · 10/100/1000 Mbit/s · Realtek RTL8153 · foldable cord · plug and play on Windows 8 to 11, macOS 10.9+, Chrome OS and Linux
A gigabit adapter built around a cord that folds into its body, sold on Amazon.com under a garbled listing — so its specification is read here from TP-Link's own US page.
Best for: A laptop bag, where an adapter with nothing sticking out of it survives better than one on a lead, and where a gigabit socket is all that is asked for.
