PHYSICAL INTERFACES 20 (24 ports models) or 44 (48 ports models) RJ-45 autosensing 10/100/1000 Po E+ ports (IEEE 802.3 Type 10BASE-T, IEEE 802.3u Type 100BASE-TX, IEEE 802.3ab Type 1000BASE-T, IEEE 802.3at Po E+); Duplex: 10BASE-T/100BASE-TX: half or full; 1000BASE-T: full only 4 RJ-45 dual-personality 10/100/1000 Po E+ ports (IEEE 802.3 Type 10BASE-T, IEEE 802.3u Type 100BASE-TX, IEEE 802.3ab Type 1000BASE-T, IEEE 802.3at Po E+) Additional ports & slots 1 stacking module slot 1 dual-personality (RJ-45 or USB (Universal Serial Bus) micro-B) 1 USB (Universal Serial Bus) 1.1 1 RJ-45 out-of-band management port Memory & processor Tri Core ARM1176 @ 625 MHz, 512 MB SDRAM Packet buffer
Size: 11.25 MB (6.75 MB dynamic egress + 4.5 MB ingress) 1 GB flash
Dimensions (H) 4.39 cm x (W) 44.25 cm x (D) 33.60 cm (1.73” x 17.42” x 13.23”) (1U height) Weight: 12.04 lb (5.46 kg) Performance IPv 6 Ready Certified 100 Mb Latency: < 9.0 µs (FIFO 64-byte packets) 10 Gbps Latency: < 3.2 µs (FIFO 64-byte packets) 24 ports models: 1000 Mb Latency: < 3.3 µs (FIFO 64-byte packets) Throughput: up to 95.2 Mpps Switching capacity: 128 Gbps