USB 2.0 3-Port Hub with Ethernet Adapter For 10/100M LAN port RJ45 Compliant with USB 2.0 and USB 1.1 specifications Compliant with IEEE 802.3 (10Base-T) and 802.3u (100Base-TX) standards Supports both full-duplex and half-duplex operations Powered by USB port. No external power adapter required Mac supported