Dimensions and weight
The following table lists the height, width, depth, and weight of your Dell Pro Max Slim FCS1250.
| Description | Values | |
|---|---|---|
| Height |
303.50 mm (11.95 in.) |
|
| Width |
95.00 mm (3.74 in.) |
|
| Depth |
293.00 mm (11.53 in.) |
|
| Weight NOTE:The weight of your
computer depends on the configuration that is ordered and
manufacturing variability.
|
|
|
Processor
The following tables list the details of the processors that are supported in your Dell Pro Max Slim FCS1250.
| Description | Option one | Option two | Option three | Option four | |
|---|---|---|---|---|---|
| Processor type |
Intel Core Ultra 5 235 |
Intel Core Ultra 5 245 |
Intel Core Ultra 5 245K |
Intel Core Ultra 7 265 |
|
| Processor wattage |
65 W |
65 W |
125 W |
65 W |
|
| Processor total core count |
14 |
14 |
14 |
20 |
|
| Performance-cores |
6 |
6 |
6 |
8 |
|
| Efficient-cores |
8 |
8 |
8 |
12 |
|
| Processor total thread count
NOTE:Intel Hyper-Threading Technology is available only on Performance-cores.
|
14 |
14 |
14 |
20 |
|
| Processor speed |
Up to 5 GHz |
Up to 5.10 GHz |
Up to 5.20 GHz |
Up to 5.30 GHz |
|
| Frequency—Performance cores | |||||
| Processor base frequency |
3.40 GHz |
3.50 GHz |
4.20 GHz |
2.40 GHz |
|
| Maximum turbo frequency |
5 GHz |
5.10 GHz |
5.20 GHz |
5.30 GHz |
|
| Frequency—Efficient cores | |||||
| Processor base frequency |
2.90 GHz |
3 GHz |
3 GHz |
1.80 GHz |
|
| Maximum turbo frequency |
4.40 GHz |
4.50 GHz |
4.50 GHz |
4.60 GHz |
|
| Processor cache |
24 MB |
24 MB |
24 MB |
30 MB |
|
| Integrated graphics |
Intel Graphics |
Intel Graphics |
Intel Graphics |
Intel Graphics |
|
| Description | Option five | Option six | Option seven | |
|---|---|---|---|---|
| Processor type |
Intel Core Ultra 7 265K |
Intel Core Ultra 9 285 |
Intel Core Ultra 9 285K |
|
| Processor wattage |
125 W |
65 W |
125 W |
|
| Processor total core count |
20 |
24 |
24 |
|
| Performance-cores |
8 |
8 |
8 |
|
| Efficient-cores |
12 |
16 |
16 |
|
| Processor total
thread count NOTE:Intel
Hyper-Threading Technology is only available on
Performance-cores.
|
20 |
24 |
24 |
|
| Processor speed |
Up to 5.50 GHz |
Up to 5.60 GHz |
Up to 5.70 GHz |
|
| Frequency—Performance cores | ||||
| Processor base frequency |
3.90 GHz |
2.50 GHz |
3.70 GHz |
|
| Maximum turbo frequency |
5.50 GHz |
5.60 GHz |
5.70 GHz |
|
| Frequency—Efficient cores | ||||
| Processor base frequency |
1.80 GHz |
1.90 GHz |
2.0 GHz |
|
| Maximum turbo frequency |
4.60 GHz |
4.60 GHz |
4.80 GHz |
|
| Processor cache |
30 MB |
36 MB |
36 MB |
|
| Integrated graphics |
Intel Graphics |
Intel Graphics |
Intel Graphics |
|
Chipset
The following table lists the details of the chipset that is supported by your Dell Pro Max Slim FCS1250.
| Description | Values |
|---|---|
| Chipset |
Intel W880 |
| Processor |
Intel Core Ultra 5/7/9 |
| DRAM bus width |
64-bit/128-bit |
| Flash EPROM |
32 MB RPMC + 32 MB nRPMC |
| PCIe bus |
Up to Gen4 |
Operating system
Your Dell Pro Max Slim FCS1250 supports the following operating systems:
- Windows 11 Home
- Windows 11 Pro
- Windows 11 Pro National Academic
- Windows 11 Enterprise
- Ubuntu Linux 24.04 LTS
For more information about Dell operating system Recovery image, see How to Download and Use the Dell OS Recovery Image in Microsoft Windows, at Dell support site.
Commercial platform Windows 11 N-2 and 5-year operating system supportability:
All newly introduced 2019 and later commercial platforms (Dell, Dell Pro, and Dell Pro Max) will qualify and ship with the most current factory installed Semi-Annual Channel Windows 11 version (N) and qualify (but not ship) the previous two versions (N-1, N-2). The Dell Pro Max Slim FCS1250 will RTS with Windows 11 version v23H2 at the time of launch, and this version will determine the N-2 versions that are initially qualified for this platform.
For future versions of Windows 11, Dell continues to test the commercial platform with coming Windows 11 releases during device production and for five years post-production, including both fall and spring releases from Microsoft.
For additional information about N-2 and 5-year Windows operating system supportability, see the Dell Windows as a Service (WaaS), at Dell support site.
EOML 411
The Dell Pro Max Slim FCS1250 continues to test the coming Semi-Annual Channel Windows 11 version releases for five years post-production, including both fall and spring releases from Microsoft.
Memory
The following table lists the memory specifications that are supported by your Dell Pro Max Slim FCS1250.
| Description | Values |
|---|---|
| Memory slots |
Four UDIMM slots |
| Memory type |
DDR5 |
| Memory speed |
|
| Maximum memory configuration |
128 GB |
| Minimum memory configuration |
8 GB |
| Memory size per slot |
8 GB, 16 GB, 32 GB |
| Memory configurations supported |
|
Memory matrix
The following table lists the memory configurations supported on your Dell Pro Max Slim FCS1250.
| Configuration | Slot | ||||
|---|---|---|---|---|---|
| UDIMM1 | UDIMM2 | UDIMM3 | UDIMM4 | ||
| 8 GB DDR5 | 8 GB | ||||
| 16 GB DDR5 | 8 GB | 8 GB | |||
| 16 GB DDR5 | 16 GB | ||||
| 32 GB DDR5 | 8 GB | 8 GB | 8 GB | 8 GB | |
| 32 GB DDR5 | 16 GB | 16 GB | |||
| 32 GB DDR5 | 32 GB | ||||
| 64 GB DDR5 | 16 GB | 16 GB | 16 GB | 16 GB | |
| 64 GB DDR5 | 32 GB | 32 GB | |||
| 128 GB DDR5 | 32 GB | 32 GB | 32 GB | 32 GB | |
External ports and slots
The following table lists the external ports and slots on your Dell Pro Max Slim FCS1250.
| Description | Values |
|---|---|
| Network port |
One RJ45 ethernet port (1 Gbps) |
| USB ports |
|
| Audio port |
One global headset jack |
| Video port(s) |
Three DisplayPort 1.4a HBR3 ports |
| Media-card reader |
One SD-card 4.0 slot (optional) |
| Power-adapter port |
One power-cable connector |
| Security-cable slot |
|
External Port (optional module slot)
The following table lists the external ports that are supported on the optional module slot for Dell Pro Max Slim FCS1250.
| Description | Values |
|---|---|
| Network port |
|
| USB ports |
|
| Video ports |
|
Internal slots
The following table lists the internal slots on your Dell Pro Max Slim FCS1250.
| Description | Values |
|---|---|
| M.2 |
NOTE:To learn more about the features of different types of M.2 cards, search in the Knowledge Base Resource at
Dell Support Site.
|
| SATA |
|
| PCIe |
|
Wireless module
The following table lists the Wireless Local Area Network (WLAN) modules that are supported on your Dell Pro Max Slim FCS1250.
| Description | Option one | Option two |
|---|---|---|
| Model number |
Intel Wi-Fi 7 BE200 |
Qualcomm FastConnect 7800 |
| Transfer rate |
Up to 5760 Mbps |
Up to 5760 Mbps |
| Frequency bands supported |
2.4 GHz/5 GHz/6 GHz |
2.4 GHz/5 GHz/6 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 wireless card |
Bluetooth 5.4 wireless card |
Ethernet
The following table lists the wired ethernet Local Area Network (LAN) specifications of your Dell Pro Max Slim FCS1250.
| Description | Values |
|---|---|
| Model |
Intel i219-LM |
| Transfer rate |
10/100/1000 Mbps |
Audio
The following table lists the audio specifications of your Dell Pro Max Slim FCS1250.
| Description | Values |
|---|---|
| Audio type |
High Definition Audio |
| Audio controller |
Realtek ALC3204 |
| Internal audio interface |
High Definition Audio (HDA) interface |
| External audio interface |
One global headset jack |
Storage
This section lists the storage options on your Dell Pro Max Slim FCS1250.
| Storage type | Interface type | Capacity |
|---|---|---|
|
3.5-inch, 7200 RPM, hard drive |
SATA AHCI, up to 6 Gbps |
2 TB |
|
3.5-inch, 7200 RPM hard drive, SAS, Enterprise hard drive |
SATA AHCI, up to 6 Gbps |
8 TB |
|
3.5-inch, 7200 RPM, hard drive, SAS, Enterprise hard drive |
SATA AHCI, up to 6 Gbps |
4 TB |
|
M.2 2230 solid state drive, Class 35 |
PCIe Gen4 NVMe, up to 64 GT/s |
512 GB |
|
M.2 2230 solid-state drive, Class 35 |
PCIe Gen4 x4 NVMe, up to 64 GT/s |
256 GB |
|
M.2 2280 self-encrypting Opal 2.0 solid state drive, Class 40 |
PCIe Gen4 x4 NVMe, up to 64 GT/s |
4 TB |
|
M.2 2280 self-encrypting Opal 2.0 solid-state drive, Class 40 |
PCIe Gen4 x4 NVMe, up to 64 GT/s |
512 GB |
|
M.2 2280 self-encrypting Opal 2.0 solid-state drive, Class 40 |
PCIe Gen4 x4 NVMe, up to 64 GT/s |
1 TB |
|
M.2 2280 self-encrypting Opal 2.0 solid-state drive, Class 40 |
PCIe Gen4 x4 NVMe, up to 64 GT/s |
2 TB |
|
9.5 mm 8x slimline DVD-RW drive |
SATA AHCI, up to 1.5 Gbps |
One slimline DVD-RW |
Storage matrix
The following table lists the storage configurations supported on your Dell Pro Max Slim FCS1250.
- One 3.5-inch hard drive
- Up to three M.2 2230 solid state drive
- Up to two M.2 2280 solid state drives
- With a M.2 drive, the M.2 drive is the primary drive.
- Without a M.2 drive, the 3.5-inch hard drive is the primary drive.
Media-card reader
The following table provides the specification of media cards that are supported by your Dell Pro Max Slim FCS1250.
| Description | Values |
|---|---|
| Media-card slot type |
One SD-card 4.0 slot (optional) |
| Media-cards supported |
|
|
NOTE:The maximum
capacity of the media-card reader varies depending on the standard
of the media card that is inserted in your computer.
|
|
Redundant Array of Independent Disks (RAID)
For optimal performance when configuring drives as a RAID volume, Dell Technologies recommends using identical drive models.
RAID 0 (Striped, Performance) volumes benefit from higher performance when drives are matched because the data is split across multiple drives: However, any I/O operations with block sizes larger than the stripe size will be constrained by the slowest drive in the array. For RAID 0 I/O operations where block sizes are smaller than the stripe size, whichever drive the I/O operation targets, determines the performance, which increases variability and results in inconsistent latencies. This variability is particularly pronounced for write operations, and it can be problematic for applications that are latency sensitive. One such example of this is any application that performs thousands of random writes per second in very small block sizes.
RAID 1 (Mirrored, Data Protection) volumes benefit from higher performance when drives are matched because the data is mirrored across multiple drives all I/O operations must be performed identically to both drives, thus variations in drive performance when the models are different result in the I/O operations completing only as fast as the slowest drive. While this does not suffer from the variable latency issue in small random I/O operations as with RAID 0 across heterogeneous drives, the impact is nonetheless large because the higher performing drive becomes limited in all I/O types. One of the worst examples of constrained performance here is when using unbuffered I/O. To ensure that that writes are fully committed to nonvolatile regions of the RAID volume, unbuffered I/O bypasses cache (for example by using the Force Unit Access bit in the NVMe protocol) and the I/O operation will not complete until all the drives in the RAID volume have completed the request to commit the data. This kind of I/O operation completely negates any advantage of a higher performing drive in the volume.
Care must be taken to match not only the drive vendor, capacity, and class, but also the specific model. Drives from the same vendor, with the same capacity, and even within the same class, can have different performance characteristics for certain types of I/O operations. Thus, matching by model ensures that the RAID volume consists of a homogeneous array of drives that deliver all the benefits of a RAID volume without incurring the additional penalties when one or more drives in the volume are lower performing.
Dell Pro Max Slim FCS1250 supports RAID with more than one hard drive configuration.
Power ratings
The following table lists the power rating specifications of Dell Pro Max Slim FCS1250.
| Description | Option one | Option two | |
|---|---|---|---|
| Type |
260 W, Bronze |
360 W, Platinum |
|
| Input voltage |
90 VAC–264 VAC |
90 VAC–264 VAC |
|
| Input frequency |
47 Hz–63 Hz |
47 Hz–63 Hz |
|
| Input current (maximum) |
4.20 A |
5 A |
|
| Output current (continuous) |
Operating:
|
Operating:
|
|
| Rated output voltage |
|
|
|
| Temperature range: | |||
| Operating |
5°C to 45°C (41°F to 113°F) |
5°C to 45°C (41°F to 113°F) |
|
| Storage |
-40°C to 70°C (-40°F to 158°F) |
-40°C to 70°C (-40°F to 158°F) |
|
Power supply connector
The following table lists the Power supply connector specifications of your Dell Pro Max Slim FCS1250.
| Power supply | Connectors |
|---|---|
| 260 W internal power supply unit (PSU), 80 Plus Bronze |
|
| 360 W internal power supply unit (PSU), 80 Plus Platinum |
|
GPU—Integrated
The following table lists the specifications of the integrated Graphics Processing Unit (GPU) supported by your Dell Pro Max Slim FCS1250.
| Controller | Memory size | Processor |
|---|---|---|
|
Intel Graphics |
Shared system memory |
Intel Core Ultra 5/7/9 |
GPU—Discrete
The following table lists the specifications of the discrete graphics processing unit (GPU) supported by your Dell Pro Max Slim FCS1250.
| Controller | Memory size | Memory type |
|---|---|---|
|
NVIDIA RTX A400 |
4 GB |
GDDR6 |
|
NVIDIA RTX A1000 |
8 GB |
GDDR6 |
|
NVIDIA RTX 2000 Ada |
16 GB |
GDDR6 |
|
NVIDIA RTX 4000 SFF Ada |
20 GB |
GDDR6 |
| NVIDIA RTX PRO 2000 Blackwell | 16 GB | GDDR7 with ECC |
Video port resolution
The following table lists the video port resolution for your Dell Pro Max Slim FCS1250.
| Graphics card | Video ports | Maximum supported resolution |
|---|---|---|
|
NVIDIA RTX A400 |
|
|
|
NVIDIA RTX A1000 |
|
|
|
NVIDIA RTX 2000 Ada-next |
|
|
|
NVIDIA RTX 4000 SFF Ada-next |
|
|
Hardware security
The following table lists the hardware security of your Dell Pro Max Slim FCS1250.
| Hardware security |
|---|
| Chassis intrusion switch |
| Chassis lock slot support |
| Intel Authenticate |
| Intel Secure Boot |
| Security-cable slot (Kensington lock) |
| Local hard drive data wipe through BIOS (Secure Erase) |
| Microsoft 10 Device Guard and Credential Guard (Enterprise SKU) |
| Microsoft Windows BitLocker |
| Padlock ring |
| SafeBIOS: includes Dell Off-host BIOS Verification, BIOS Resilience, BIOS Recovery, and additional BIOS Controls |
| SafeID including Trusted Platform Module (TPM) 2.0 |
| Self-encrypting storage drives (Opal, FIPS) |
| Smart card keyboard (FIPS) |
| Supply chain tamper alerts |
| Trusted Platform Module TPM 2.0 |
Environmental
The following table lists the environmental specifications of your Dell Pro Max Slim FCS1250.
| Feature | Values |
|---|---|
| Recyclable packaging | Yes |
| BFR/PVC—free chassis | Yes |
| Vertical orientation packaging support | No |
| 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 Max Slim FCS1250.
| 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 Max Slim FCS1250.
Airborne contaminant level: G1 as defined by ISA-S71.04-1985
| Description | Operating | Storage |
|---|---|---|
| Temperature range |
0°C to 35°C (32°F to 95°F) |
-40°C to 65°C (-40°F to 149°F) |
| Relative humidity (maximum) |
20% to 90% (non-condensing) |
5% to 95% (non-condensing) |
| Vibration (maximum)* |
0.52 GRMS |
2.0 GRMS |
| Shock (maximum) |
40 G† |
105 G† |
| Altitude range |
-15.2 m to 3048 m (-49.87 ft to 10000 ft) |
-15.2 m to 10668 m (-49.87 ft to 35000 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 support policy
For information about Dell support policy, search Dell Support Site.




























