HP PC Commercial BIOS (UEFI) Setup
HP PC Commercial BIOS (UEFI) Setup 
July 2020 
919946-004 
© Copyright 2016-2019 HP Development Company, L.P. 
5 Advanced Menu 48 
Feature 
Type 
Description 
Default 
Notes 
 Serial Port (A, 
B, C, D, C/D, E/F) 
Setting 
When checked, enables the specified serial ports. 
Checked 
Desktop Only 
Serial Port 
Voltage (A) (B) 
(C) (D) (E) (F) 
Setting 
Powered Serial port voltage selection on RPOS units that 
include this feature. Possible settings are: 
•  0 Volts 
•  5 Volts 
•  12 Volts 
0 Volts 
Retail Point of 
Sale Systems 
Only 
 Smart Card 
Setting 
When checked, enables integrated Smart Card slot. 
Checked 
Notebook Only 
 Smart Card 
Power Savings 
Setting 
When checked, enables the power-saving feature of the 
Smart Card reader, thus not maintaining a session when the 
card is removed. 
Checked 
Notebook Only 
Cash Drawer Port 
Setting 
On select Retail Point of Sale systems, this controls whether 
the cash drawer port can be activated or not. 
Enable 
Retail Point of 
Sale Systems 
Only 
Restrict USB 
Devices 
Setting 
When some devices are restricted, the system disables the 
ports at boot-up where a restricted device is installed. That 
port is disabled until the next boot. Port configuration is not 
changed on insertion. The following settings are possible: 
•  Allow all USB Devices 
•  Allow only keyboard and mouse 
•  Allow all but storage devices and hubs 
Allow all USB 
Devices 
5.9 Power Management Options Menu 
The following table describes various setting options for Power Management Options. 
Table 28  Power Management Options Menu features 
Feature 
Type 
Description 
Default 
Notes 
 Runtime 
Power 
Management 
Setting 
When checked, enables the processor to run at lower 
frequencies (P-states) when higher performance is not 
needed. When unchecked the processor always runs at 
maximum frequency. 
Checked 
Select products 
only 
 Extended Idle 
Power States 
Setting 
When checked, enables the processor to rest in lower 
power states (C-states) when idle. 
Checked 
Select products 
only 
 S5 Maximum 
Power Savings 
Setting 
When checked, minimizes system power consumption 
while in the S5 (off) state. 
NOTE: Windows 10 with Fast Startup enabled powers off 
to the S4 (suspend to disk) state. 
Unchecked 
Desktop Only 
 SATA Power 
Management 
Setting 
When checked, enables the SATA bus to enter low power 
states when idle. 
Checked 
Desktop Only 
 Deep Sleep 
Setting 
When checked, reduces power consumption while in 
S3/S4/S5 to extend battery life. 
NOTE: Enabling deep sleep disables some wake events 
such as wake on USB without AC power. 
Checked 
Notebook Only 










