I've added an external (Freecom XS 1TB) hard disk to my Time Capsule. However, this one's Mac Journaled (HFS+) formatted and does not display in Finder until I add a hub between the TC and external HDD.
The Freecom XS is powered, and when I add a Western Digital HDD without powering it displays in Finder.
What am I missing? Both are formatted Mac Journaled HFS+.