Bell, 24, joins the UTS Stadium side following a spell in Australia with Victorian State League Division One side Preston Lions.
He has previously featured in the Pitching In Northern Premier League Premier Division with South Shields and Whitby Town, having started his career with Sunderland's academy.
He has also appeared for Inverness Caledonian Thistle.
Manager Chris Swailes said: "I'm delighted to welcome Connor to the club, he's quality player and has played in some very good sides.
"He'll will a great addition to the attacking line and I wanted to bring another forward in with Brooksy leaving the club for Alnwick."
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