2 DIMM slots , Up to 64GB DDR4 Memory 2666/2933/3200 MHz
Hard Drive
HDD or M.2 SSD
Removable Media
Optional
Expansion Bays
N/A
Expansion Slots
One M.2 slot for WiFi and Bluetooth card, Two M.2 2230/2280 slot for SSD/Intel Optane
Graphics
Intel UHD Graphics 630, 730, 750
Audio
Realtek ALC3246
Communications
Intel i219-LM10/100/1000 Mbps
I/O Ports
Front: Universal audio jack, re-tasking Line-in/Line out audio, 1 x USB 3.2 Gen 2x2 Type-C (integrated:Gen 2x1 Type-C when configured with 10th Generation Intel processors), 1 x USB 3.2 Gen 2 Type-A with PowerShare, Rear (Integrated): RJ45, 1 x USB 3.2 Gen 1 Type-A, 1 x USB 3.2 Gen 1 Type-A with Smart Power on, 2 x USB 3.2 Gen 2 Type-A, 2 x DisplayPort 1.4, Rear (Discrete): RJ45, Mini DisplayPort 1.4, DisplayPort 1.4 Type-A, 1 x USB 3.2 Gen 1 Type-A with Smart Power on, 2 x USB 3.2 Gen 2 Type-A, DisplayPort 1.4
An internal 2-port Cisco Ethernet switch allows for a direct connection to a 10/100/1000BASE-T Ethernet network (IEEE 802.3i/802.3u/802.3ab) through a RJ-45 interface with single LAN connectivity for both the phone and a co-located PC.
Voice Codecs
G.711 a-law and mu-law, G.722, G.729a, Internet Low Bitrate Codec (iLBC), and Internet Speech Audio Codec (iSAC)
Skinny Client Control Protocol (SCCP) and Session Initiation Protocol (SIP) with Cisco call control
Power Supply
Supports IEEE 802.3af PoE (Class 3). 48VDC is required; it can be supplied locally at the desktop using an optional AC-to-DC power supply (part number CP-PWR-CUBE-3=) or power injector (CP-PWR-INJ=).