HP Z220 SFF, Z220 CMT, Z420, Z620, and Z820 Workstations Maintenance and Service Guide

Designator Silk screen Component
P26 P26 INTERNAL USB3 Single internal USB header
P27 DASH/USB1 DASH/Dual internal USB
P29 P29 HDD LED Hard disk drive LED connector
P54 COM Serial port header
P60-P64 SATA0 - SATA4 SATA connectors
P65 eSATA eSATA connector
P66 - P67 P66 - P67
SATA4 - SATA5
SATA connectors
P70 P70 CPU0 FAN Primary CPU fan header
P124 P124 HOOD LOCK Side access panel solenoid lock header
P126 PAR Parallel port header
SW50 SW50 CMOS Clear CMOS switch/push button
XBT1 XBT1 BAT Battery holder
XMM1 - XMM4 XMM1 - XMM4
DIMM1 - DIMM4
Memory slots
XU1 XU1 Primary CPU socket
HP Z420 and Z620 Workstation system board designators
Designator Name on board Component
E14 BB ROM bootblock header
E15 BBR ROM bootblock recovery header
E16 ROM RCVRY ROM Recovery header/jumper
E17 LPC LPC Debug
E49/JP49 PSWD Clear Password header
J9 RJ45/USB Stacked RJ45/Dual USB
J10 USB Quad Stacked USB
J20-22 PCIx (x=1-3) PCI slots
J31-32 X1PCIEXPx (x=1-2) PCI Express X1 slot
J41 X16PCIEXP or MXM PCI Express x16 or MXM graphics slot
J42 X4PCIEXP PCI Express x4 graphics slot
J68 PS2 Stack keyboard/mouse connector
J69 VGA or VGA/COMA VGA connector or VGA+serial port
J70 USB Primary Single USB
HP Z420 and Z620 Workstation system board designators 175