Thanks for your reply!
I mean 10 megabytes/sec max. Judging by what I read in this thread and others, I actually thought I could expect at least 40+ megabytes per second from the EX2 (not just megabits), especially when connecting directly, but also from within my gigabit ethernet environment.
root@WDMyCloudEX2 root # ethtool egiga0
Settings for egiga0:
Supported ports: [ TP MII ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Supported pause frame use: No
Supports auto-negotiation: Yes
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Advertised pause frame use: No
Advertised auto-negotiation: No
Link partner advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Link partner advertised pause frame use: No
Link partner advertised auto-negotiation: Yes
Speed: 1000Mb/s
Duplex: Full
Port: MII
PHYAD: 0
Transceiver: internal
Auto-negotiation: on
Link detected: yes