Product UPC: 725184869839 The HP Procurve Switch 4100gl series 4108gl is convergence-ready and easy to use in compact 8-slot modular form factor. Combined with HP's Fast Path Technology, this switch also provides high-performance, reliable connectivity for a growing network. The Switch 4100gl series 4108gl is the low-cost, modular alternative to stackable switches and include free software upgrades and a lifetime warranty.