I looked at another picture and couldn't really read the writing...and they only talked about Mic/Line., but yeah, that does have instrument inputs...you just need to set the button next to the input (Line/Instrument)..so yeah, that's a DI.
Of course, if you prefer to use an external DI....then just plug its output into the *Mic* input, since most DI box outputs are meant to go into a preamp input, not Line or Intrument input.