This product is either discontinued or we cannot get that from suppliers.
CISCO Ws-x4748-upoe+e C4510RE-S8-UPOE, Network hubs and switches, Ports-48, Jumbo Frame 9216 bytes, Compliant Standards IEEE 802.1ae, IEEE 802.3at, IEEE 802.3x, IEEE 802.3ab, IEEE 802.3ad (LACP), IEEE 802.3az, IEEE 802.3af, IEEE 802.3z, Interface 48 x 1000Base-T RJ-45 PoE, MTBF 140,696 Hours, O/S Cisco IOS XE.
The Catalyst 4500 Series with CenterFlex technology provides scalable non-blocking Layer 2-4 switching with secure, flexible, non-stop communications, enabling business resilience for enterprises, small and medium-sized businesses.