# Please any reference on drivers for QNS and FREERTOS for XTend® 900MHz RF Modems?

**URL:** <https://forums.digi.com/t/please-any-reference-on-drivers-for-qns-and-freertos-for-xtend-900mhz-rf-modems/18371>\
**Category:** XBee & XBee Gateway\
**Tags:** 900mhz, rf, modems, freertos, qnx\
**Created:** [May 17, 2017, 2:52pm UTC](https://forums.digi.com/t/please-any-reference-on-drivers-for-qns-and-freertos-for-xtend-900mhz-rf-modems/18371 "2017-05-17T14:52:53Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![SCHAD](https://avatars.discourse-cdn.com/v4/letter/s/ce73a5/32.png) [@SCHAD](https://forums.digi.com/u/SCHAD)\
**Post date:** [May 17, 2017, 2:52pm UTC](https://forums.digi.com/t/please-any-reference-on-drivers-for-qns-and-freertos-for-xtend-900mhz-rf-modems/18371/1 "2017-05-17T14:52:53Z")

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**Author:** ![mvut](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.digi.com/mvut/32/31_2.png) [@mvut](https://forums.digi.com/u/mvut)\
**Post date:** [May 18, 2017, 2:48pm UTC](https://forums.digi.com/t/please-any-reference-on-drivers-for-qns-and-freertos-for-xtend-900mhz-rf-modems/18371/2 "2017-05-18T14:48:25Z")

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The xtend does not require drivers. It is an RS232 or CMOS level device. Simply connect it to the devices RS232, RS485, RS4222 or 5V CMOS port and send your data just like you would if there was a serial cable.

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**Author:** ![SCHAD](https://avatars.discourse-cdn.com/v4/letter/s/ce73a5/32.png) [@SCHAD](https://forums.digi.com/u/SCHAD)\
**Post date:** [May 19, 2017, 3:47pm UTC](https://forums.digi.com/t/please-any-reference-on-drivers-for-qns-and-freertos-for-xtend-900mhz-rf-modems/18371/3 "2017-05-19T15:47:04Z")

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Sorry, I was talking about the USB version. Any reference in this case?

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<div class="post-metadata">

**Author:** ![mvut](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.digi.com/mvut/32/31_2.png) [@mvut](https://forums.digi.com/u/mvut)\
**Post date:** [May 31, 2017, 2:31pm UTC](https://forums.digi.com/t/please-any-reference-on-drivers-for-qns-and-freertos-for-xtend-900mhz-rf-modems/18371/4 "2017-05-31T14:31:20Z")

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I am sorry but the only drivers offered are Windows. You might want to check on FTDI web site as that is who’s USB chip Digi uses and the driver comes from.