ASUS GigaX1124B is a 24-port 10/100/1000 Gigabit unmanaged Switch with a Mini-GBIC port. It is a perfect solution for upgrading your network to Gigabit speed. It also provides superior performance, rich features, and high reliability for small-to-medium enterprises and power users. Equipping the switch with 4 Mini-GBIC SFP ports lets you to add fiber-optic capability for expanding your network in the future Features: - 24 RJ-45 10/100/1000 Mbps Ethernet ports with Auto MDI/MDIX - Complies with IEEE 802.3 (10Base-T), IEEE 802.3u (100Base-TX), IEEE 802.3ab (1000Base-T) standards - Auto MDI/MDIX - Auto negotiation of speed (10/100/1000Mbps), and duplex mode. *Note that 1000Mbps supports only full duplex mode - 8K MAC addresses with automatic address learning and aging - IEEE 802.3x Flow Control support for 10/100/1000Mbps full duplex - Up to 2Gbps in full-duplex mode - Back pressure support for 10/100Mbps half duplex - one fan