I just recently purchased "3 x GekkoScience COMPAC F with Fan Upgrade + Bitcoin Merch® 7-Port USB Hub - COMBO Up to 1.05+TH/s" from Bitcoin Merch and I am not getting the 1.05+TH/s stated.  Instead I am getting 291.4g from all 3 miners.  Can anyone tell me why this is?  Is it because of the 7-port USB Hub not providing the required power?  Here are the commands I am using to start cgminer: 

cgminer -O stratum+tcp://us-east.stratum.slushpool.com:3333 -u xxxxx -p xxxxx x --suggest-diff 442 --gekko-serial "GS-100xxxxx,GS-100xxxxx,GS-100xxxxx" --gekko-compacf-detect l--gekko-compacf-freq 400 --gekko-start-freq 400 --gekko-mine2 --gekko-tune2 85

Thanks.