Netgear ProSafe 48-Port GigaBit Stackable Smart Switch. Data transmission: 10/100/1000 Gbit/s, 96 Gbit/s. Networking: IEEE 802.3, IEEE 802.3u, IEEE 802.3ab, IEEE 802.3z, IEEE 802.3x. Management features: Unmanaged. Memory: 128 MB. Weight & dimensions: 440 x 257 x 43.2 mm, 4050 g. Energy management: 78.36 W, 100-240V / 50-60Hz. System requirements: -Category 5 network cables -Network card for each PC -Network software