Look for this section in the PCoIP server logs. In this example the user is connecting from a Wyse P25 zero client with firmware 6.0.
2018-04-10T09:09:17.419-06:00> LVL:2 RC: 0 PRI :(peer_endpoint_advertisement_info): ------>>> Start of peer endpoint advertisement received from peer: -----
2018-04-10T09:09:17.419-06:00> LVL:2 RC: 0 PRI :===> Peer Endpoint Type: Client
2018-04-10T09:09:17.419-06:00> LVL:2 RC: 0 PRI :===> PCoIP Implementation: Hardware
2018-04-10T09:09:17.419-06:00> LVL:2 RC: 0 PRI :===> PCoIP Version: release/fw/r6_0@6.0.0.0 Aug 28 2017 16:29:45
2018-04-10T09:09:17.419-06:00> LVL:2 RC: 0 PRI :===> Software Part Number: FW023004
2018-04-10T09:09:17.419-06:00> LVL:2 RC: 0 PRI :===> Device Name: TERA2321 Wyse P25/Yukon DP + DVI Copper
2018-04-10T09:09:17.419-06:00> LVL:2 RC: 0 PRI :===> OS Type: ThreadX
2018-04-10T09:09:17.419-06:00> LVL:2 RC: 0 PRI :===> OS Bit System: 32 Bit
2018-04-10T09:09:17.419-06:00> LVL:2 RC: 0 PRI :===> Processor Architecture: MIPS
2018-04-10T09:09:17.419-06:00> LVL:2 RC: 0 PRI :===> Processor Clock Rate: 500 MHz
2018-04-10T09:09:17.419-06:00> LVL:2 RC: 0 PRI :===> Processor Bit System: 32 Bit
2018-04-10T09:09:17.419-06:00> LVL:2 RC: 0 PRI :===> Number of Processor Cores: 1
2018-04-10T09:09:17.419-06:00> LVL:2 RC: 0 PRI :===> Memory Size: 512 MB
2018-04-10T09:09:17.419-06:00> LVL:2 RC: 0 PRI :(peer_endpoint_advertisement_info): ------>>> End of peer endpoint advertisement received from peer: -----
You can also pull the Client version from the registry. Have a look at the "HKEY_CURRENT_USER\Volatile Environment\1\ViewClient_Client_Version" key.
