# HP ProBook 4330s

Device | Working
Fan is throttled | No
Intel graphics | Yes
HDMI | Yes
VGA | Yes
Audio | Yes
USB 3.0 | Yes
Ethernet | Yes
WLAN | Yes
Bluetooth | Not tested
Touchpad | Yes
Backlight control | Yes
Function keys | Yes
Hardware switches | Yes
Card reader | Yes
Webcam | Yes

## Hardware support

The hardware support is indicated in the table on the right.

### Fan throttling

The fan can be controlled (throttled) in software, otherwise it never shuts off, even if the BIOS option "Fan always on while on AC power" is disabled. There are two programs supporting the 4330s:

- NoteBook FanControl
- probook_ec.pl script daemonized in Python and in Ruby

### Intel CPU microcode

See Microcode#Enabling Intel microcode updates.

Related articles

- HP_ProBook_4530s
- HP_ProBook_4730s
- Intel_graphics
- Power_management
- GRUB
- GRUB/Tips and tricks

### Synaptics Touchpad

The `xf86-input-synaptics` driver is needed (see Touchpad Synaptics) for the touchpad to work, but the pointstick works out of the box.

### WLAN BIOS whitelist workaround

HP BIOS allows only certain WLAN cards (whitelisting) to be used. This can be worked around by adding the following as the first GRUB command in every OS entry:

    write_dword 0xFED1F418 0x1F501FEB

You can read more on engineering this hack here.

## Documentation

- Linux User Guide
- Specifications
- Maintenance and Service Guide
- EoL Disassembly Guide

Category:

- HP