Description
- Conveniently upgrade a NAS, laptop or desktop to 2.5-Gigabit Ethernet
- Compatible with current network standards, including Gigabit and 100-Megabit connections.
- Flexible compatibility. Compatible with ASUSTOR ADM 3.4 and above, Windows, macOS and Linux.
USB Type-C
The AS-U2.5G uses USB Type-C, making it easy to connect to your laptop or desktop.
Integrated USB Cable
The AS-U2.5G comes with an integrated a USB-C cable, making transport easy and reducing costs.
Equipped With a 2.5GbE RJ45 Port
Equipped with a 2.5GBASE-T RJ45 port, providing up to 2.5Gbps of speed using Cat 5e cables.
Easily Comes With You
The AS-U2.5G weighs only 49 g and is easily portable.
USB powered
The AS-U2.5G is powered directly from the USB port and does not require additional power. The AS-U2.5G is compatible with both USB Type-C ports and USB Type-A ports with an adapter. (Adapter sold separately)
Fashionable
Don’t be embarrassed bringing the AS-U2.5G with you! The aesthetic of the AS-U2.5G makes sure it does not look out of place in almost any situation with almost any device.
Faster-Than-Ever Network Performance
AS-U2.5G with the Nimbustor provides up to 2.5 times the speed of a Gigabit NAS setup.
Upgrade Your Devices to 2.5-Gigabit Ethernet
The AS-U2.5G can be easily plugged into a desktop or laptop to provide up to 2½ times the speed of Gigabit Ethernet. Combine the AS-U2.5G with a Nimbustor 2 and 4 to enable in-home storage at speeds indistinguishable from local hard drive storage. Supports 2.5-Gigabit speeds while also being backwards compatible with Gigabit and 100-Megabit networks, making the AS-U2.5G one of our most flexible network cards ever.
Make Your NAS Fast Again
The AS-U2.5G is able to upgrade your Gigabit-Enabled ASUSTOR NAS to 2.5-Gigabit speeds using the USB 3.2 Gen1 port. Supports ADM 3.4 and above.
- Supports both USB Type-C and USB Type-A* with the use of an adapter. *USB Type-A adapter not included.
- Certain USB Type-C adapters exhibit an issue where plugging in a device a certain way will reduce USB speeds to 2.0 levels. Unplugging the device and flipping it should result in full speed USB operation and 2.5-Gigabit Ethernet.

Hardware & Packaging
Hardware Specifications
- Network Controller: RTL8156
- Data transfer rate: 2.5 Gbps
- Network operation mode: Full duplex
- Interface: USB 3.2 Gen 1 Type C (compatible with Thunderblot 3 interface)
- Power: USB power supply
- Operating temperature: 5 – 35 °C
- Storage temperature: -20 – 50 °C
- Relative humidity: 20% to 80% RH
- Certification: FCC, CE
- Support for auto-negotiation between 100Mb/s, 1Gb/s and 2.5Gb/s
- Support operating system:
- ASUSTOR ADM 3.4 or above
- Windows XP, VISTA, 7 SP1, 8, 8.1, 10 or above (32/64-bit)
- MacOS 10.4 or above
- Linux 2.6 or above
- Applicable models:
- AS31/32/50/51/52/53/61/62/63/64/65/66/70/71
- Personal Computer (PC)
- Laptop (Laptop)
- Apple MAC
Size and Weight
- Size: 21 (H) x 245 (W) x 39.9 (D) mm
- Weight: 49 g
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