Cisco CP-8851-K9 IP Phone for Cisco Call Manager (Renew) 4500X It offers flexibility to support

It offers flexibility to support multiple deployment modes in the same controller—a centralized mode for campus environments

including Cat 5e

providing reliable and high-speed connections

but this posting is for the PS-L with 4x 1GB Uplinks

Cisco CP-8851-K9 IP Phone for Cisco Call Manager (Renew) 4500X It offers flexibility to supportCisco CP 8851 K9 IP Phone Renew With a 1 Year Warranty The Cisco IP Phone 8851 is a business class collaboration endpoint that combines high fidelity, reliable, secure, and scalable voice communications with Cisco Intelligent Proximity for telephony integration for personal mobile devices to support midsize to large enterprise businesses.