WS-C3750V2-24PS-E WS-C3750V2-24PS-S WS-C3750V2-24TS-E WS-C3750V2-24TS-S WS-C 3750V2-48PS-E WS-C3750V2-48PS-S WS-C3750V2-48TS-E WS-C3750V2-48TS-S If you are interested in our products, do contact me . Amanda MSN: ciscoandhuawei@ hotmail.com YIM: ciscoandhuawei Skype: amandashili ly