General Device Type: Switch Enclosure Type: External - 1U Built-in Devices: Led panel Package Dimension (L x W x H in inches): 20.5 x 14.25 x 3.7 inch Weight: 8.91 lb Environmental Parameters Min Operating Temperature: 0 C Max Operating Temperature: 40 C Humidity Range Operating: 10 - 95% Expansion / Connectivity Expansion Slots Total (Free): 4 ( 4 ) x SFP (mini-GBIC) Interfaces: 48 x network - Ethernet 10Base-T/100Base-TX/1000Base-T - RJ-45 Memory RAM: 1 MB Miscellaneous MTBF: 322,402 hour(s) Authentication Method: RADIUS Compliant Standards: CE, FCC Class A certified, C-Tick, cUL, VCCI Class A ITE, IC Class A Networking