Thanks for the input.
Change to cgminer-dmaxl-zeus and tried manually from ssh session:
/var/www/minera/minera-bin/cgminer-dmaxl-zeus --scrypt --scan-serial /dev/ttyUSB0 --url --user --pass z
cgminer version 4.3.5-scrypt.2 - Started: [2016-01-03 00:07:47]
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(5s):0.000 (1m):0.000 (5m):0.000 (15m):0.000 (avg):0.000h/s
A:0 R:0 HW:0 WU:0.0/m
Connected to miningpool.com diff 1.02K with stratum as user
Block: e710674a... Diff:51.7K Started: [00:07:47] Best share: 0
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[U]SB management [P]ool management [S]ettings [D]isplay options [Q]uit
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[2016-01-03 00:07:25] Started cgminer 4.3.5-scrypt.2
[2016-01-03 00:07:46] Zeus Detect: Test failed at /dev/ttyUSB0: got 00000000, should be: 00038d26
[2016-01-03 00:07:46] No devices detected!
[2016-01-03 00:07:46] Waiting for USB hotplug devices or press q to quit
[2016-01-03 00:07:46] Probing for an alive pool
[2016-01-03 00:07:46] Pool 0 difficulty changed to 1024
[2016-01-03 00:07:47] Network diff set to 51.7K
[2016-01-03 00:07:48] Stratum from pool 0 requested work restart
[2016-01-03 00:07:58] Stratum from pool 0 requested work restartKilled
USB1 and USB2 didn't do much better. Both failed to detect and killed in 20-30 seconds.