The 3Com NBX V3000 Family, V3001 and V5000 System 125 Device License Upgrade (3C10287) is a unit-based license that will add an incremental 125 devices to the exsisting amount of devices on the system up to a maximum of 1500 devices. The NBX V3000 Platform requires purchase/installation of separate 512 MB Memory Upgrade (3C10240) in hand and the system must be off-line to install this upgrade. The V3001 and V5000 platform do not require memory upgrade in advance of installation of additional licenses. Call for availability of this item.