Can somebody tell me what's the difference between these switches? Thanks. The big difference between them is the former is '-L' while the latter is '-S'. -L means LAN Base while -S means IP Base. More product features below: WS-C3650-48FS-L Overview: PoE Switch 48 * 10/100/1000 POE+ Ethernet ports with 4 * 1G SFP uplinks Layer 2 switching with limited static routing features LAN Base IOS image with upgrade option to IP service (L-C3650-48-L-E) or IP base (L-C3650-48-L-S) Up to 9 members stacking and up to 160Gbps of stack throughput Dual redundant power supplies and fans redundant modular WS-C3650-48FS-S Overview: PoE Switch 48 * 10/100/1000 Ethernet POE+ ports with fixed 4 * 1G SFP uplinks IP base image with update option to IP service (L-C3650-48-S-E) Layer 3 routing features Up to 9 members stacking and up to 160Gbps of stack throughput Up to 40G wireless bandwidth per switch, up to 25 APs and 1000 Wireless clients for each switching entity