Dimensions and weight
The following table lists the height, width, depth, and weight of your Dell Pro Micro QCM1255.
| Description | Values | |
|---|---|---|
| Height |
182.00 mm (7.17 in.) |
|
| Width |
36.00 mm (1.41 in.) |
|
| Depth |
178.00 mm (7.01 in.) |
|
| Weight NOTE:The weight of your
computer depends on the configuration that is ordered and
manufacturing variability.
|
|
|
Processor
The following table lists the details of the processors that are supported by your Dell Pro Micro QCM1255.
| Description | Option one | Option two | Option three | Option four | Option five | Option six | |
|---|---|---|---|---|---|---|---|
| Processor type | AMD Ryzen 7 PRO 8700GE | AMD Ryzen 5 PRO 8600GE | AMD Ryzen 5 PRO 8500GE | AMD Ryzen 5 8500GE | AMD Ryzen 3 PRO 8300GE | AMD Ryzen 3 8300GE | |
| Processor wattage | 35 W | 35 W | 35 W | 35 W | 35 W | 35 W | |
| Processor total core count | 8 | 6 | 6 | 6 | 4 | 4 | |
| Processor total thread count | 16 | 12 | 12 | 12 | 8 | 8 | |
| Processor frequency | |||||||
| Maximum Boost frequency | 5.10 GHz | 5.00 GHz | 5.00 GHz | 5.00 GHz | 4.90 GHz | 4.90 GHz | |
| Base frequency | 3.60 GHz | 3.90 GHz | 3.40 GHz | 3.40 GHz | 3.50 GHz | 3.50 GHz | |
| Processor cache | 24 MB | 22 MB | 22 MB | 22 MB | 12 MB | 12 MB | |
| Integrated graphics | AMD Radeon 780M Graphics | AMD Radeon 760M Graphics | AMD Radeon 740M Graphics | AMD Radeon 740M Graphics | AMD Radeon 740M Graphics | AMD Radeon 740M Graphics | |
| AI technology | AMD Ryzen AI | AMD Ryzen AI | None | None | None | None | |
| Neural Processing Unit (NPU) performance | 16 TOPS | 16 TOPS | Not applicable | Not applicable | Not applicable | Not applicable | |
|
NOTE:Tera Operations Per Second (TOPS) is an
AI performance metric that measures how many trillions of
operations per second an AI processor can perform.
|
|||||||
| Description | Option seven | Option eight | Option nine | Option ten | Option eleven | Option twelve | |
| Processor type | AMD Ryzen AI 7 PRO 450GE | AMD Ryzen AI 5 PRO 440GE | AMD Ryzen AI 5 PRO 435GE | AMD Ryzen AI 7 450GE | AMD Ryzen AI 5 440GE | AMD Ryzen AI 5 435GE | |
| Processor wattage | 35 W | 35 W | 35 W | 35 W | 35 W | 35 W | |
| Processor total core count | 8 | 6 | 6 | 8 | 6 | 6 | |
| Processor total thread count | 16 | 12 | 12 | 16 | 12 | 12 | |
| Processor frequency | |||||||
| Maximum Boost frequency | 5.10 GHz | 4.80 GHz | 4.50 GHz | 5.10 GHz | 4.80 GHz | 4.50 GHz | |
| Base frequency | 2.00 GHz | 2.00 GHz | 2.00 GHz | 2.00 GHz | 2.00 GHz | 2.00 GHz | |
| Processor cache | 24 MB | 22 MB | 14 MB | 24 MB | 22 MB | 14 MB | |
| Integrated graphics | AMD Radeon 860M graphics | AMD Radeon 840M Graphics | AMD Radeon 840M Graphics | AMD Radeon 860M graphics | AMD Radeon 840M Graphics | AMD Radeon 840M Graphics | |
| AI technology | AMD Ryzen AI | AMD Ryzen AI | AMD Ryzen AI | AMD Ryzen AI | AMD Ryzen AI | AMD Ryzen AI | |
| Neural Processing Unit (NPU) performance | 50 TOPS | 50 TOPS | 50 TOPS | 50 TOPS | 50 TOPS | 50 TOPS | |
|
NOTE:Tera Operations Per Second (TOPS) is an
AI performance metric that measures how many trillions of
operations per second an AI processor can perform.
|
|||||||
Chipset
The following table lists the details of the chipset that is supported in your Dell Pro Micro QCM1255.
| Description | Option one |
|---|---|
| Chipset |
AMD PRO 665 |
| Processors |
|
| DRAM bus width |
128-bit |
| Flash EPROM |
64 MB non-RPMC + 2 MB non-RPMC |
| PCIe bus |
Up to Gen4 |
| Non-volatile memory | Yes |
| BIOS configuration Serial Peripheral Interface (SPI) | 512 Mbit (64 MB) located at SPI_FLASH |
| Trusted Platform Module (TPM) 2.0 (Discrete TPM Enabled) | 24 KB located at TPM 2.0 on chipset |
| Firmware-TPM (Discrete TPM disabled) | Not supported |
| NIC EEPROM | LOM configuration contained within SPI flash ROM instead of LOM e-fuse |
Operating system
Your Dell Pro Micro QCM1255 supports the following operating systems:
- Windows 11 Home
- Windows 11 Pro
- Windows 11 Pro Education
- Ubuntu Linux 24.04 LTS, 64-bit
Memory
The following table lists the memory specifications that are supported by your Dell Pro Micro QCM1255.
| Description | Values |
|---|---|
| Memory slots |
Two SODIMM slots |
| Memory type |
DDR5 |
| Memory speed |
|
| Maximum memory configuration |
64 GB |
| Minimum memory configuration |
8 GB |
| Memory size per slot |
8 GB, 16 GB, or 32 GB |
| Memory configurations supported |
|
Memory matrix
The following table lists the memory configurations supported on your Dell Pro Micro QCM1255.
| Configuration | Slot | |
|---|---|---|
| SODIMM1 | SODIMM2 | |
| 8 GB DDR5 | 8 GB | |
| 16 GB DDR5 | 16 GB | |
| 16 GB DDR5 | 8 GB | 8 GB |
| 32 GB DDR5 | 32 GB | |
| 32 GB DDR5 | 16 GB | 16 GB |
| 64 GB DDR5 | 32 GB | 32 GB |
External ports and slots
The following table lists the external ports and slots of your Dell Pro Micro QCM1255.
| Description | Values |
|---|---|
| Network port |
One RJ45 ethernet port (1 Gbps) |
| USB ports |
|
| Audio port |
One headset (headphone and microphone combo) port |
| Video port(s) |
|
| Power-adapter port |
One 4.5 mm DC-in port |
| Security-cable slot |
|
| Optional port |
|
Internal slots
The following table lists the internal slots of your Dell Pro Micro QCM1255.
| Description | Values |
|---|---|
| M.2 |
NOTE:To learn more about the features of
different types of M.2 cards, search Dell Support Site.
|
Ethernet
The following table lists the wired ethernet Local Area Network (LAN) specifications of your Dell Pro Micro QCM1255.
| Description | Values |
|---|---|
| Model |
Realtek RTL8111EPP |
| Transfer rate |
10/100/1000 Mbps |
Wireless module
The following table lists the Wireless Local Area Network (WLAN) modules that are supported on your Dell Pro Micro QCM1255.
| Description | Option one | Option two |
|---|---|---|
| Model number |
MediaTek MT7925 |
MediaTek MT7920 |
| Transfer rate |
Up to 2882 Mbps |
Up to 1200 Mbps |
| Frequency bands supported |
2.4 GHz/5 GHz/6 GHz |
2.4 GHz/5 GHz |
| Wireless standards |
|
|
| Encryption |
|
|
| Bluetooth wireless card NOTE:The functionality of the Bluetooth wireless card may vary based on
the operating system. |
Bluetooth 5.4 |
Bluetooth 5.4 |
Audio
The following table lists the audio specifications of your Dell Pro Micro QCM1255.
| Description | Values |
|---|---|
| Audio type |
4 Channel High-Definition Audio |
| Audio controller |
Realtek ALC3204 Codec |
| Internal audio interface |
High-Definition Audio |
| External audio interface |
One headset (headphone and microphone combo) port |
| Speakers | Internal speakers |
Storage
This section lists the storage options on your Dell Pro Micro QCM1255.
| Storage type | Interface type | Capacity |
|---|---|---|
|
M.2 2230 solid state drive |
QLC PCIe Gen4 NVMe, Class 25 |
Up to 1 TB |
|
M.2 2230 solid state drive |
TLC Gen4 PCIe NVMe, Class 35 |
Up to 1 TB |
|
M.2 2280 solid state drive |
TLC Gen4 PCIe NVMe, Class 40, Self-Encrypting Opal 2.0, Class 40 |
Up to 1 TB |
- Single SSD configuration: One SSD is installed in either of the two slots.
- Dual SSD configuration: SSDs are installed in both slots.
To upgrade from a single SSD configuration to a dual configuration by adding an SSD, users must install SSD heatsinks on both SSDs to ensure optimal performance. These heatsinks must be purchased separately.
Storage matrix
The following table lists the storage configurations supported on your Dell Pro Micro QCM1255.
| Storage | Slot | |||
|---|---|---|---|---|
| M.2 PCIe SSD-0 (Primary M.2 PCIe for boot function) | M.2 PCIe SSD-1 | |||
| One M.2 2230 solid-state drive | Yes | |||
| One M.2 2280 solid-state drive | Yes | |||
| Two M.2 2230 solid-state drive | Yes | Yes | ||
| Two M.2 2280 solid-state drive | Yes | Yes | ||
| One M.2 2230
solid-state drive + One M.2 2280 solid-state drive |
Yes (M.2 2230/2280) | Yes (M.2 2230/2280) | ||
Power adapter
The following table lists the power adapter specifications of your Dell Pro Micro QCM1255.
| Description | Option one | Option two | |
|---|---|---|---|
| Type |
90 W |
65 W |
|
| Connector dimensions: | |||
| External diameter |
4.50 mm |
4.50 mm |
|
| Internal diameter |
2.90 mm |
2.90 mm |
|
| Power-adapter dimensions: | |||
| Height Width |
32.00 mm |
28.00 mm |
|
|
52.00 mm |
47.00 mm |
||
| Depth |
128.00 mm |
108.00 mm |
|
| Input voltage |
100 VAC–240 VAC |
100 VAC–240 VAC |
|
| Input frequency |
50 Hz–60 Hz |
50 Hz–60 Hz |
|
| Input current (maximum) |
1.50 A |
1.70 A |
|
| Output current (continuous) |
4.62 A |
3.34 A |
|
| Rated output voltage |
19.5 VDC |
19.50 VDC |
|
| Temperature range: | |||
| Operating |
0°C to 40°C (32°F to 104°F) |
0°C to 40°C (32°F to 104°F) |
|
| Storage |
-40°C to 70°C (-40°F to 158°F) |
-40°C to 70°C (-40°F to 158°F) |
|
|
CAUTION:Operating and storage temperature ranges may differ among components, so operating or storing the device outside these ranges may impact the performance of specific components.
|
|||
GPU—Integrated
The following table lists the specifications of the integrated Graphics Processing Unit (GPU) supported by your Dell Pro Micro QCM1255.
| Controller | Memory size | Processor |
|---|---|---|
|
AMD Radeon 740M Graphics |
Shared system memory |
|
|
AMD Radeon 760M Graphics |
Shared system memory |
AMD Ryzen 5 PRO 8600GE |
|
AMD Radeon 780M Graphics |
Shared system memory |
AMD Ryzen 7 PRO 8700GE |
Video port resolution (GPU—Integrated)
| Graphics card | Video ports | Maximum supported resolution |
|---|---|---|
| AMD Radeon 780M/760M/740M Graphics | One DisplayPort 1.4a (HBR3 support) port | 5120 x 3200 @ 60Hz |
| One HDMI 2.1 (TMDS) port | 4096 x 2160 @ 60 Hz | |
One optional port slot which can be configured with
one of the following options:
|
|
|
| AMD Radeon 860M/840M Graphics | One DisplayPort 1.4a (HBR3 support) port | 5120 x 3200 @ 60Hz |
| One HDMI 2.1 (TMDS) port | 4096 x 2160 @ 60 Hz | |
One optional port slot which can be configured with
one of the following options:
|
|
External display support (GPU—Integrated)
Display support for the integrated graphics card
| Graphics card | Supported external displays |
|---|---|
| AMD Radeon 780M/760M/740M | Up to 4 simultaneous displays |
| AMD Radeon 780M/760M/740M + optional module | Up to 4 simultaneous displays |
| AMD Radeon 860M/840M | Up to 4 simultaneous displays |
| AMD Radeon 860M/840M + optional module | Up to 4 simultaneous displays |
Hardware security
The following table lists the hardware security of your Dell Pro Micro QCM1255.
| Hardware security |
|---|
| Kensington security-cable slot |
| Padlock ring |
| Chassis lock slot support |
| Chassis intrusion switch |
| Lockable cable covers |
| Supply chain tamper alerts |
| SafeID including Trusted Platform Module (TPM) 2.0 |
| Smart card keyboard (FIPS) |
| Microsoft Windows security features Device Guard & Credential Guard (Enterprise SKU) |
| SafeBIOS: includes Dell Off-host BIOS Verification, BIOS Resilience, BIOS Recovery, and additional BIOS Controls |
| Microsoft Windows BitLocker |
| Local hard drive data wipe through BIOS (Secure Erase) |
| Self-encrypting storage drives (Opal, FIPS) |
| Post-Quantum Cryptography (PQC) |
Environmental
The following table lists the environmental specifications of your Dell Pro Micro QCM1255.
| Feature | Values |
|---|---|
| Recyclable packaging | Yes |
| BFR/PVC—free chassis | Yes |
| Vertical orientation packaging support | Yes |
| Multi-Pack packaging | Yes |
| Energy-Efficient Power Supply | Standard |
| ENV0424 compliant | Yes |
Regulatory compliance
The following table lists the regulatory compliance of your Dell Pro Micro QCM1255.
| Regulatory compliance |
|---|
| Product Safety, EMC and Environmental Datasheets |
| Dell Regulatory Compliance Home Page |
| Responsible Business Alliance policy |
Operating and storage environment
This table lists the operating and storage specifications of your Dell Pro Micro QCM1255.
Airborne contaminant level: G1 as defined by ISA-S71.04-1985
| Description | Operating | Storage |
|---|---|---|
| Temperature range |
10°C to 35°C (50°F to 95°F) |
-40°C to 65°C (-40°F to 149°F) |
| Relative humidity (maximum) |
20% to 80% (non-condensing) |
5% to 95% (non-condensing) |
| Vibration (maximum)* |
0.26 GRMS |
1.37 GRMS |
| Shock (maximum) |
40 G† |
105 G† |
| Altitude range |
-15.2 m to 3048 m (-49.87 ft to 10,000 ft) |
-15.2 m to 10,668 m (-49.87 ft to 35,000 ft) |
|
CAUTION:Operating and storage temperature ranges may differ among components, so operating or storing the device outside these ranges may impact the performance of specific components.
|
||
* Measured using a random vibration spectrum that simulates the user environment.
† Measured using a 2 ms half-sine pulse.
Dell Optimizer
This section details the Dell Optimizer specifications of your Dell Pro Micro QCM1255.
Dell Optimizer is an AI-based software application that allows you to customize your computer settings for power and more. Learn more: Optimizer at Dell Site
For Dell Pro Micro QCM1255 with Dell Optimizer, you can:
- Tune the performance, power consumption, cooling, and fan noise with selectable thermal modes.
- Download and redeem the apps that are purchased with your computer.
For more information about configuring and using these features, see Dell Optimizer User Guide.




























