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<blockquote data-quote="JoshJ" data-source="post: 1660243" data-attributes="member: 282115">Hi Nick. Thanks a lot for your replies. I think I may not have stated my OP clearly enough;The reason I am asking whether a (bus powered) FW device (using a TB adapter) is hot pluggable whilst in Sleep mode is simply because I have read that it is possible to damage the posts on either end of the chain by doing so (frying either the FW 400 port on the audio interface or the TB ports on my mac). I obviously want to avoid this but completely shutting my mac down each time I want to connect/disconnect the interface is very inconvenient &amp; creates a workflow issue.Just wanted to update this thread as I have been playing around with the interface a bit more this week;I have noticed that the interface does have a &quot;Power&quot; light on it along with a &quot;FW&quot; (firewire) &amp; &quot;LKD&quot; (locked) light.When I put the mac to sleep all 3 lights switch off after about 15 seconds. However, when I plug the interface back in again (with mac still supposedly in sleep mode) the lights all light up.&nbsp;Does this mean that power is still being supplied to the TB ports whilst in Sleep mode? Or, is it that plugging something into the TB ports wakes the system &amp; starts it supplying power to the ports?</blockquote>

[QUOTE="JoshJ, post: 1660243, member: 282115"] Hi Nick. Thanks a lot for your replies. I think I may not have stated my OP clearly enough; The reason I am asking whether a (bus powered) FW device (using a TB adapter) is hot pluggable whilst in Sleep mode is simply because I have read that it is possible to damage the posts on either end of the chain by doing so (frying either the FW 400 port on the audio interface or the TB ports on my mac). I obviously want to avoid this but completely shutting my mac down each time I want to connect/disconnect the interface is very inconvenient & creates a workflow issue. Just wanted to update this thread as I have been playing around with the interface a bit more this week; I have noticed that the interface does have a "Power" light on it along with a "FW" (firewire) & "LKD" (locked) light. When I put the mac to sleep all 3 lights switch off after about 15 seconds. However, when I plug the interface back in again (with mac still supposedly in sleep mode) the lights all light up. Does this mean that power is still being supplied to the TB ports whilst in Sleep mode? Or, is it that plugging something into the TB ports wakes the system & starts it supplying power to the ports? [/QUOTE]

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