ZWO USBST4 guider adapter


Out of stock

SKU: ZWO-USBST4 Category:

Product Description

Small lightweight USB to ST4 adapter

Item include: USBST4, 2 meter USB cable, 2 meter ST4 guider cable

USBST4 (2)USBST4 (3)


the red led will be on if guider is working


connect your mount and USB port of your computer

USBST4 Mount

Software usage:

USBST4 is one USB HID device and you don’t need any native driver to run it, plugin and play!

1.Download and install USBST4 ASCOM Driver (you need install ASCOM platform at first) ASCOM under mount menu


3. choose “ZWO USBST4”

Click “Properties” to show the USBST4 connect status and you can control and test the mount here.


that’s all! you can control your mount through USBST4 now



Before first usage of this product read Manuals and install correct Drivers and Software.


It will take around 60-90 days for shipment via ePacket/China Post Registered Air Mail/EMS, which can’t be guaranteed due to force majeure.

  • Fast Shipping(amount ≧ 199USD) for free
  • Fast Shipping(amount < 199USD) : $20.00 (We do not provide free shipping from now on.)

If you can’t get the air mail package after 2months, please let us know ASAP:


  1. Fast Shipping: we will choose DHL, UPS, FedEx etc to deliver it. Usually you will get your package within one month.
  2. Customers from Brazil and Chile should leave a message to provide your CPF or CNPJ as your custom needs it.
  3. Customers from Russia need to provide the complete English name with three words as well as the English shipping address.

Tracking site


China air mail:



  • The price list on our website is USD without tax.
  • Please note that buyers are liable to pay tax involved, such as Import tax, VAT , customs handling fee, etc. The additional fees may be collected at time of delivery by courier.
  • For best local service we advise customers buy our cameras form local dealers.

Warranty and Return Policy

  • We provide 2-year warranty for our products, we will offer the repair service for free within warranty period. After the warranty period, we will continue to provide repair support and service on a charged basis. We do not provide any replacement unless ZWO confirmed the product is DOA (Dead On Arrival).
  • This warranty does not apply to damage that occurred as a result of abuse or misuse, or caused by a fall or any other transportation failures after purchase.
  • Customer must pay for shipping when shipping the camera back for repair or replacement. If we confirm you can get a replacement, goods must be returned with all accessories, instructions, etc and must be suitably packed.
  • If you get a faulty camera, please contact us as soon as possible though email: Please describe the problem in detail and we will do our best to help you solve the problem. Most instances perceived problems are simply bad driver install or software configuration.
  • We will provide you RMA number if your camera requires warranty repair. We refuse any return without RMA number!
  • For customers who bought the camera from our dealer, dealer is responsible for the customer service for you.

Do you have question, answer or comment? Post here!

  1. Avatar


    I need the driver for this but the link on this site is $)$. Please make the driver available again.
    Thank you,


  2. Avatar


    I wanna use this on Mac, however, I couldn’t find INDI driver for this. Is there INDI for this or any way to use this on Mac?


  3. Avatar


    Hi, I bought a USBST4 Adapter yesterday from taobao. When I connected it with a USB cable from my laptop, the LED indicator didn’t work. And then I tried to remove the case of the USBST4, and I found there is no LED component inside. I would like to ask if I bought a fake product or that is just a new version product? Thank you.


    • Sam Wen


      I you don’t need to bother if it works
      I mean ASCOM driver can find this device and control it
      otherwise you need to contact your seller


  4. Avatar


    Hello, Is there a way to use this stuff with a mac book? Is there an INDI driver? Thank you in advance. Regards. David


    • Avatar


      Yes,We support MAC,


  5. Avatar


    I ordered this device after I found the ST4 tracking on the ASI290MC camera non-functional. I installed the driver from the website, but when I plug in the usb adapter it is not recognized by windows (nothing shows up in the “device manager”). Tested it on windows 7, 8.1 and 10 on different machines.

    This is the second product I ordered from you, and the second non-functional product. What’s going on here?



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