# Limitations of the Q2686H with the 7.3 firmware?

**URL:** <https://forum.sierrawireless.com/t/limitations-of-the-q2686h-with-the-7-3-firmware/3030>\
**Category:** Legacy AirPrime modules\
**Created:** [March 11, 2009, 9:26am UTC](https://forum.sierrawireless.com/t/limitations-of-the-q2686h-with-the-7-3-firmware/3030 "2009-03-11T09:26:21Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Madouc](https://avatars.discourse-cdn.com/v4/letter/m/b782af/32.png) [@Madouc](https://forum.sierrawireless.com/u/Madouc)\
**Post date:** [March 11, 2009, 9:26am UTC](https://forum.sierrawireless.com/t/limitations-of-the-q2686h-with-the-7-3-firmware/3030/1 "2009-03-11T09:26:21Z")

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There seem to be limitations in using the Q2686H with firmware 7.3?

I got a mailing from my distributor that i should switch to the Q2686G because the memory usage of the newest firmware is larger than the Q2686H can handle.  
Possible problems seem to arise when using IDS, but i would like to know if there are other features affected as well?  
(i’ve been using 7.x firmwares with my Q2686H for a while already, but encountered no problems with memory usage yet)