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NA265A

External PCIe 3.0 to GPU Rackmount Enclosure

(A) 

If the PCIe slot of host PC, workstation that works with 

      NA265A is PCIe 3.0 ×16,

 set (this is the default setting)

      JP2 at Gen3. 
      SW1-2 at ON.

(B) 

For Mac Pro, host PC, or workstation whose PCIe slot is 

      PCIe 2.0 ×16 that is used to work with NA265A,

 set

(D) 

If the PCIe slot of host PC, workstation that works with 

      NA265A is PCIe 2.0 ×8,

 set

After identifying the PCIe slot in computer that 
links with NA265A and making the correct 
setting as one of the four conditions listed 
above, install the host card NP970A-H onto 
the PCIe slot in host PC, workstation or 
Mac Pro.

(C) 

If the PCIe slot of host PC, workstation that works with NA265A 

      is PCIe 3.0 ×8,

 set

6. Connect one end of two PCIe ×8 data cables to PCIe ×8 

    connectors on rear of NA265A.
7. Connect the other end of two PCIe ×8 data cables to the 

    two PCIe ×8 connectors on NP970A-H host card on host 

    PC, workstation, or Mac Pro.

5.

  

Fan Speed Adjustment

The fan speed of the front 90×90×25 mm cooling fan of 

NA265A can be adjusted. Pull out the fan module, on the 

connector of cooling fan, there are five sets of jumpers 

labeled with 4, 3, 2, 1 and F from top to bottom on the fan 

connector board. The default setting is the jumper being 

placed over pin 9 and 10 for label 4 for slowest speed. 

The speed increases from label 3 to label F. When jumper is 

not placed over pins, the fan will not spin.

6.

  

Powering On/Off TurboBox NA265A

There are two ways to power on/off the NA265A. One is to 

power on/off NA265A by host (the default setting); the other 

is to power on/off NA265A by manual. Configure switch 

SW1-1 near slot 5 on backplane for setting. For powering 

on/off by host, switch SW1-1 to “ON” position. For powering

 on/off by manual, switch SW1-1 to “OFF” position.

When NA265A is set for powering on/off by host, the NA265A 

will be automatically powered on and off with the 

host computer. When NA265A is set for powering on/off by 

manual, the standard powering on/off procedure below must 

be followed:

(1) Power on TurboBox NA265A by 

     pressing the power button for 

     two seconds until the button 

     shows blue light.

(2) In order to let the BIOS of host PC, workstation, or 

      Mac Pro identify and assign resources appropriately, 

      always power on NA265A first, and then power on 

      host PC, workstation, or Mac Pro. 

(3) To remove TurboBox NA265A from host PC, workstation, 

      or Mac Pro, power off host PC, workstation, or Mac Pro 

      first, and then power off NA265A.

3. Remove the L shape metal bracket on rear of TurboBox 

    NA265A by unscrewing the screw of metal bracket for 

    installing the graphics or PCIe card on NA265A.

4. Install one graphics/PCIe card into one PCIe ×16 slot in 

    NA265A and tighten it with a screw.

5. Put the top cover back to TurboBox NA265A, and tighten 

    the two thumbscrews to fasten the top cover.

Each GPU card in NA265A is provided with two 6+2 pin PCIe 

power cables for extra power resource. Up to 4 double-width, 

full-length GPU cards can be installed in slot 2, slot 3, slot 4, 

and slot 5 in enclosure.

2. Loosen the two thumbscrews and remove the top cover 

    from TurboBox NA265A.

8. Connect the end of power cord to power receptacle on 

    TurboBox NA265A and the other end of power cord to 

    grounded outlet or power strip.

There are three hot-swappable 90×90×25 mm cooling fans for 

ventilation inside TurboBox NA265A. The cooling fan can be 

taken out by unscrewing the thumbscrew on the fan module.

Note: 

Make straight connection between host card and target 

          card with mark ×8 to ×8, and ×16 to ×16. DO NOT make 

          cross connection.

9

7

5

3

1

10

8

6

4

2

motherboard 

x16

x8

x16 x8

JP2 at Gen2,
SW1-2 at ON.

JP2 at Gen3, 
SW1-2 at OFF, 
SW1 on host card and target card at ON.

JP2 at Gen2, 
SW1-2 at OFF,
SW1 on host card and target card at ON.

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