Dell Pro Slim Desktop

Model: QCS1255
$1,429.00
Free Shipping
Financing Offers
Take advantage of 12 months special financing B on purchases of $799+ and earn $100 when you open a Dell Pay Credit Account and are enrolled in Dell Rewards.D,*. Valid through 10/30/2026.
Offer ID qcs1255_reg_01
Performance and expandability in a space-saving design.

A compact, high-performance PC built for heavy workloads and tight spaces, with exceptional security and manageability for businesses. Featuring Copilot+ PC options for AI-enhanced productivity.

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AMD Ryzen™ 3 8300G (4 cores, up to 4.9GHz)
AMD Ryzen™ 3 8300G (4 cores, up to 4.9GHz)
Selected
AMD Ryzen™ 3 PRO 8300G (4 cores, up to 4.9GHz)
+ $10.00
AMD Ryzen™ 5 8500G (6 cores, up to 5.0GHz)
+ $10.00
AMD Ryzen™ 5 8600G (16 TOPS NPU, 6 cores, up to 5.0GHz)
+ $40.00
AMD Ryzen™ 5 PRO 8500G (6 cores, up to 5.0GHz)
+ $10.00
AMD Ryzen™ 5 PRO 8600G (16 TOPS NPU, 6 cores, up to 5.0GHz)
+ $60.00
AMD Ryzen™ 7 8700G (16 TOPS NPU, 8 cores, up to 5.1GHz)
+ $90.00
AMD Ryzen™ 7 PRO 8700G (16 TOPS NPU, 8 cores, up to 5.1GHz)
+ $100.00
AMD Ryzen™ AI 5 440G (50 TOPS NPU, 6 cores, up to 4.8GHz)
+ $130.00
AMD Ryzen™ AI 5 PRO 440G (50 TOPS NPU, 6 cores, up to 4.8GHz)
+ $150.00
AMD Ryzen™ AI 7 PRO 450G (50 TOPS NPU, 8 cores, up to 5.1GHz)
+ $150.00
AMD Ryzen™ AI 7 PRO 450G (50 TOPS NPU, 8 cores, up to 5.1GHz)
+ $180.00
Windows 11 Pro
Windows 11 Pro
Selected
16 GB: 1 x 16 GB, DDR5, up to 5600 MT/s
8GB: 1 x 8GB, DDR5, up to 5600 MT/s
– $290.00
16 GB 2 x 8 GB DDR5 up to 4800 MT/s non ECC
$0.00
16 GB: 1 x 16 GB, DDR5, up to 5600 MT/s
Selected
32 GB: 2 x 16 GB, DDR5, up to 4800 MT/s, non-ECC
+ $530.00
32 GB 1 x 32 GB DDR5 up to 4800 MT/s non ECC
+ $530.00
64 GB 2 x 32 GB DDR5 4800MT/s
+ $1,530.00
512 GB SSD Gen4x4 QLC
$340.00 /ea.
+ $340.00
$440.00 /ea.
+ $440.00
$350.00 /ea.
Selected
$710.00 /ea.
+ $710.00
$280.00 /ea.
+ $280.00
$600.00 /ea.
+ $600.00
Integrated Graphics
Integrated Graphics
Selected
NVIDIA RTX A400, 4 GB GDDR6, half height, 4 mDP to DP
+ $190.00
None
None
Selected
MediaTek Wi-Fi 6 MT7920, 2x2, 802.11ax, MU-MIMO, Bluetooth® wireless card, external antenna
+ $20.00
MediaTek Wi-Fi 6 MT7920, 2x2, 802.11ax, MU-MIMO, Bluetooth® wireless card, internal antenna
+ $20.00
MediaTek Wi-Fi 7 MT7925, 2x2, 802.11be, MU-MIMO, Bluetooth® wireless card, external antenna
+ $30.00
MediaTek Wi-Fi 7 MT7925, 2x2, 802.11be, MU-MIMO, Bluetooth® wireless card, internal antenna
+ $30.00
Dell Pro Slim QCS1255 with 180W PSU
Dell Pro Slim QCS1255 with 180W PSU
Selected
Dell Pro Slim QCS1255 with 360W PSU
+ $33.00
Dell Wired Keyboard - KB216 - English-US
Dell Wired Keyboard - KB216 - English-US
Selected
No Keyboard Selected
– $7.00
Dell Pro 3 Wired Mouse - MS116 - Black
Dell Pro 3 Wired Mouse - MS116 - Black
Selected
No Mouse Selected
– $2.00
ENERGY STAR Qualified
None
ENERGY STAR Qualified
Selected
System Power Cord, C13, 2m, 125V, 13A, US
System Power Cord, C13, 2m, 125V, 13A, US
Selected
None
None
Selected
8x DVD+/-RW 9.5mm Optical Disk Drive
+ $30.00
8x DVD-ROM 9.5mm ODD
+ $30.00
EPEAT 2.0 Silver with Climate+
None
EPEAT 1.0 Gold with Climate+
$0.00
EPEAT 2.0 Silver with Climate+
Selected
Intrusion cable switch
Intrusion cable switch
Selected
Internal speaker
Internal speaker
Selected
None
None
Selected
PS/2 and Serial port card (Low Profile)
+ $10.00
Mechanical - USB Type-C 3.1 & 3.2 PCIe Low Profile
+ $50.00
USB 3.2 - Ethernet PCIe Full Height, 3.2 Gbps (Low profile)
+ $40.00
Connector - MOD,CRD, I/O,PCIe,SER,LP,DSFF
+ $20.00
Connector - MOD,CRD, I/O,PCIe,SER,PRL,DSFF
+ $30.00
None
None
Selected
Network Adapter (NIC) i226 LP
+ $20.00
None
None
Selected
Optional DisplayPort 2.1, UHBR20, V1
+ $30.00
Optional HDMI 2.1 Port
+ $20.00
Optional USB Type-C with DisplayPort Alt mode
+ $30.00
Optional VGA Port
+ $10.00
Optional 2 x USB 3.2 Gen 2 Type-A Ports
+ $30.00
Optional DisplayPort 2.1, UHBR20, V2
+ $30.00
None
None
Selected
Optional Serial Port
$0.00
English, French, Spanish, Brazilian Portuguese
English, French, Spanish, Brazilian Portuguese
Selected
None
None
Selected
Accessory - Vertical Stand, for HDD config only
+ $10.00
Regular - No Documentation
Regular - No Documentation
Selected
Single Pack Shipping Material
Single Pack Shipping Material
Selected
None
None
Selected
Assy,Bezel - Dust filter
$0.00
Regular - LBL,REG,180W,FSJ,QCS1255,V2
Regular - LBL,REG,180W,FSJ,QCS1255,V2
Selected
US/Canada Battery Warning Label
None
US/Canada Battery Warning Label
Selected
None
None
Selected
Assy,Bezel - ASSY,BZL,DVD,SLIM,MT/SFF,D14
$0.00
M.2 Caddy + HDD,ODD
$0.00
Bracket - ASSY,BRKT,BAY,HD/ODD,MT/SF,D14
$0.00
None
None
Selected
CUSTOM Add in, Back-End, CUSTOM
+ $30.00
Basic Hardware Service with Onsite Support After Remote Diagnosis
Basic Hardware Service with Onsite Support After Remote Diagnosis
Selected
Commonly asked questions about tech specs

Tech Specs

  • Processor

    AMD Ryzen™ 3 8300G (4 cores, up to 4.9GHz)

  • Operating System
    (Dell Technologies recommends Windows 11 Pro for business)

    Windows 11 Pro

  • Graphics Card

    Integrated Graphics

  • Memory *

    16 GB: 1 x 16 GB, DDR5, up to 5600 MT/s

  • Storage

    512 GB SSD Gen4x4 QLC

  • Operating System Languages

    English, French, Spanish, Brazilian Portuguese

  • Microsoft Office

    Activate Your Microsoft 365 For A 30-Day Trial

  • Energy Star

    ENERGY STAR Qualified

  • Software System Management

    Dell Additional SW -Dell Pro Desktop

  • Hardware Support Services Upgrades

    ProSupport with Onsite Service After Remote Diagnosis

  • Base Warranty

    Basic Hardware Service with Onsite Support After Remote Diagnosis

  • Keyboard

    Dell Pro 3 Wired Keyboard - KB216 - English-US - Black

  • Mouse

    Dell Pro 3 Wired Mouse - MS116 - Black

  • Ports

    Front:
    2 USB 2.0 (480 Mbps) with PowerShare ports
    1 USB 3.2 Gen 1 (5 Gbps) Type-C® port
    1 USB 3.2 Gen 1 (5 Gbps) port
    1 universal audio port

    Rear
    2 USB 2.0 (480 Mbps) ports
    2 USB 3.2 Gen 1 (5 Gbps) ports
    1 RJ45 Ethernet port, 1GbE
    1 HDMI 2.1 (TMDS) port
    1 DisplayPort™ 1.4a (HBR3) port

    Rear (expansion, these are mutually exclusive options):
    1 VGA port (optional)
    1 HDMI 2.1 (FRL) port (optional)
    1 DisplayPort™ 1.4a (HBR3) port (optional)
    1 serial port (optional)
    2 USB 3.2 Gen 2 (10 Gbps) ports (optional)
    1 USB 3.2 Gen 2 (10 Gbps) Type-C® with DisplayPort™ Alt Mode port (optional)

  • Slots

    1 half-height Gen4 PCIe x16 slot (Wired as x8)
    2 half-height Gen3 PCIe x1 slots
    1 M.2 2230 slot for Wi-Fi and Bluetooth combo card
    1 M.2 2230/2280 slot for solid state drive
    1 SATA 3.0 slots for 3.5-inch hard drive
    1 SATA 3.0 slots for slim optical drive
    1 security-cable slot (for a Kensington lock)
    1 padlock ring

  • Dimensions & Weight

    Height: 11.95 in. (303.50 mm)
    Width: 3.74 in. (95 mm)
    Depth: 11.54 in. (293 mm)
    Weight (minimum): 8.61 lb (3.90 kg)
    Weight (maximum): 12.99 lb (5.89 kg)

  • Power Cord

    System Power Cord, C13, 2m, 125V, 13A, US

  • Speaker

    Internal speaker

Reviews

Ratings & Reviews are provided by verified users through email, My Account, or at events.
What customers are saying
Customers find the Dell Pro Slim (QCS1255) easy to set up, fast, and space‑saving for desk use. A few customers report frustrating customer‑service experiences, including delayed refunds and unanswered support calls. Most praise its quiet operation, quick boot times, and reliable performance, noting smooth multitasking with many browser tabs and Excel.
This AI-generated summary reflects customer review from the past two years and is updated weekly.
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