Hi Goh Chee Wong,
There are two kinds of documents in Extreme Networks, Software and Hardware.
For H/W installation guide of AP7632, you can download from:
https://www.extremenetworks.com/support/documentation/ap7632/
For S/W user guide of WiNG OS 5.9.3 version (which is the latest one), you can download from:
https://www.extremenetworks.com/support/documentation/extremewireless-wing-software-5-9-3/
Best regards,