According to this HP Document, the switches in the 1400 series are unmanaged.
From the PDF:
The ProCurve Switch 1400 series provides plug-and-play simplicity for
high-bandwidth connectivity. The Switch 1400 series consists of two unmanaged
switches. The ProCurve Switch 1400-24G is a 24-port 10/100/1000 switch with
22 10/100/1000 ports and 2 dual-personality ports. The ProCurve Switch
1400-8G is a small-form-factor switch with 8 10/100/1000 ports. Ideal for
deployment in open spaces, both switches feature silent operation via a fanless
design.
And since you mentioned you didn't have a manual...
Managed vs. Unmanaged?
A managed switch allows you to prioritize connections you as you see fit, giving you the ability to make sure critical network functions take priority.
Here's a great podcast transcript by Cisco on this topic.