Dell Pro Tower QCT1255 drivers
13 driver packages Dell publishes for the Pro Tower QCT1255, for Windows 11 and 10 64-bit. Newest: Jan 1, 2026.
Each driver page lists the hardware IDs the package supports and the other Dell models it is made for. Downloads are the original Dell installers. If Windows Update already installed a driver for a device and it works, there is no need to replace it; install a package when a device is missing in Device Manager or misbehaves.
Video cards
| Driver | Version | Date |
|---|---|---|
| AMD Radeon Graphics Driver | 32.0.12046.3001 | Oct 16, 2025 |
Sound cards
| Driver | Version | Date |
|---|---|---|
| Realtek High Definition Audio Driver | 6.0.9791.1 | Feb 26, 2025 |
Network cards (LAN)
| Driver | Version | Date |
|---|---|---|
| Realtek PCIe Ethernet Controller Driver | 3.1.2025.815 | Aug 13, 2025 |
| Intel I226 Ethernet Driver | 24.1.0.0 | Sep 2, 2024 |
Wi-Fi adapters
| Driver | Version | Date |
|---|---|---|
| MediaTek MT7920/MT7921/MT7922/MT7925 Wi-Fi UWD Driver Older: 5.7.0.4755, 5.6.0.3906 |
5.7.0.4755 | Oct 30, 2025 |
Bluetooth
| Driver | Version | Date |
|---|---|---|
| MediaTek MT7920/MT7921/MT7922/MT7925 Bluetooth UWD Driver | 1.1045.0.559 | Oct 30, 2025 |
Chipset
| Driver | Version | Date |
|---|---|---|
| AMD Chipset Driver Older: 7.8.28.515, 7.3.25.941 |
7.1.2.221 | Jan 1, 2026 |
USB
| Driver | Version | Date |
|---|---|---|
| Sunix USB 3.2 Cypress Card Driver | 1.3.0.5 | Jul 30, 2024 |
Ports (COM / LPT)
| Driver | Version | Date |
|---|---|---|
| Sunix Serial and Parallel Card Driver | 10.2.9.0 | Jan 15, 2025 |
Which driver is for which device?
Device Manager shows a device without a driver under Other devices. Its hardware ID tells you which package above it belongs to (how to find the ID); paste it into the search to go straight to the matching drivers.
Other Dell models
- Pro Essential 15 PV15265
- Pro Essential Micro PVM1265
- Pro Essential Slim PVS1265
- Pro Essential Tower PVT1265
- Pro Micro Plus QBM1250 / Dell Pro Micro QCM1250
- Pro Micro QCM1255
- Pro Micro Thin Client Q9M1260
- Pro Slim Essential QVS1260
- Pro Slim Plus QBS1250 / Dell Pro Slim QCS1250
- Pro Slim QCS1255
- Pro Tower Essential QVT1260
- Pro Tower Plus QBT1250 / Dell Pro Tower QCT1250