• Dedicated single 1500 watts power supply for GPU usage
  • Extremely High-Speed 128Gbps PCIe 3.0 x16 host connectivity
  • Solid metal structure with stylish aluminum housing
  • Two quiet front 120x120x25 mm fan cooling for self-contained ventilation
  • Capable of up to four dual-slot GPU cards
  • Environmental Monitoring with Power/FAN/TEMP LEDs and mutable buzzer alarm

128 Gbps Bandwidth – PCIe Gen3 x 16

The Netstor NA255A-XGPU.15 enclosure implements the latest in PCIe 3.0 technology and PCIe Gen3 16-lane host interface with throughput 8Gbps per lane, offering blazing-fast data transfer rates up to 128Gbps between host and expansion enclosure, dedicated for GPU-accelerated applications.

Up to 4 Dual-Width GPU Cards

The GPU enclosure is designed to have 4 PCIe x16 slots (x8 electrical) on NA255A backplane supporting up to 4 double-width PCIe Gen3 GPU cards, or single-slot PCIe cards. In addition, the enclosure can accommodate all combinations of PCIe 3.0 ×1, ×4, ×8 and ×16 GPU/PCIe cards for every application with backward compatibility for Gen2 cards to work with host, server or workstation in areas such as HPC, telecom, and data centers.

High Performance Computing

Traditional host computers or workstations use conventional CPU and GPU to work with professional applications. These conventional data processors cannot provide a higher processing power to meet modern working demands. However, by adding the Netstor NA255A GPU enclosure with up to four high-end GPU cards to your host/workstation, you will  turn your conventional host computer into a high-performance computing workstation.

Extra Graphics Card Holders

In view of some high-performance GPU card with card length up to 30 cm or so, due to card’s heavier weight and longer length, a special graphics card holder has been deliberately designed close to each PCIe slot for holding the large, heavy GPU card thoroughly and reliably within the NA255A enclosure.

Convenient Adjustable Fan Speeds

NA255A is equipped with two front large 12×12 cm cooling fan modules with each fan in support of 75 CFM, providing best airflow ventilation to enclosure for most excellent heat dissipation ever, and ensuring graphics cards within chassis can run long term without any high temp concern. Moreover, the fan speed of each cooling fan can be adjusted manually according to GPUs application situation within NA255A GPU chassis.

PCIe Expansion Chassis NA255A-XGPU.15 Product Description

Form Factor Desktop
Host Interface Up to 128Gb/s external PCIe 3.0 x16
No. of Slot 4 x PCI Express 3.0 x8 (x16 connector)
Card Length Available Supports full length,full height PCI Express Cards
LED Display for Enclosure Power-On LED – Blue FAN normal – green; Fan failure – Red TEMP normal – green; TEMP Over 55°C – red
Cooling Front: two 120x120x25 mm cooling fans 75 CFM each fan @ full speed
Alarm Buzzer beeping for fan failure or over temperature (over 55°C) occurs
Material Solid metal structure with aluminum housing
Power Supply Model : NA255A-XGPU.15 Universal Single 1500W (High-Efficiency & Low Noise) Input: 90~230 VAC/50-60 HZ 12V @ 100A (Note: 1600W peak power @ 12 seconds)
Dimension 450 (D) x 175.8 (W) x 374 (H) mm 17.7 (D) x 6.9 (W) x 14.7 (H) inch
O.S. support OS Independent
Host Requirement One PCIe 3.0 x16 slot and system has sufficient PCIe resources Note: 1. The tower MacPro under 10.9 Mavericks and 10.10 Yosemite only supports up to 2 nVidia GPU cards. 2. Now the tower MacPro under 10.11 El Capitan is able to support up to 3 nVidia GPU cards again.

Enclosure x 1 PCIe 3.0 x16 host adapter with full height bracket x 1 PCIe 3.0 x16 target board for upstream port x 1 (Installed into NA255A) PCIe 3.0 x8 cable(1.5 meter) x2 Power Cord x 1 CD User Manual x 1

Model No. Description
NA255A-XGPU Desktop PCIe Gen3 Expansion Enclosure, 1500W Single Power Supply with extra 4* PCIe power connectors 6+2 pin & 4* PCIe 6 pin for up to 4 double width GPU cards, with one PCIe Gen3 x16 host adapter and two PCIe x8 cables
NP970A Extra PCIe Gen3 x16 Host Adapter


Extra PCIe 3.0 x8 cable length in 1.5 meter