Harold Smith, a federal prisoner, seeks to appeal the district court’s order affirming the magistrate judge’s order denying Smith’s motion for appointment of counsel in his action filed under 28 U.S.C. § 2241 (2000). This court may exercise jurisdiction only over final orders, 28 U.S.C. § 1291 (2000), and certain interlocutory *309 and collateral orders, 28 U.S.C. § 1292 (2000); Fed.R.CivJP. 54(b); Cohen v. Beneficial Indus. Loan Corp., 387 U.S. 541, 69 S.Ct. 1221, 93 L.Ed. 1528 (1949). The order Smith seeks to appeal is neither a final order nor an appealable interlocutory or collateral order. Accordingly, we dismiss the appeal for lack of jurisdiction. * Smith’s motion for leave to perpetuate testimony pending appeal is denied. We dispense with oral argument because the facts and legal contentions are adequately presented in the materials before the court and argument would not aid the decisional process.

DISMISSED.