*334 Unpublished opinions are not binding precedent in this circuit.

Shakeam Dyrell Bernabela pled guilty pursuant to a plea agreement to one count each of conspiracy to distribute and possess with the intent to distribute cocaine and cocaine base, in violation of 21 U.S.C. §§ 841(b)(1)(A), (B), 846 (2012), and he was sentenced to 151 months in prison. Bemabela’s counsel has filed a brief in accordance with Anders v. California, 386 U.S. 738, 87 S.Ct. 1396, 18 L.Ed.2d 493 (1967), suggesting that Bernabela’s plea was unknowing and involuntary and that his sentence is unreasonable, but explaining why those arguments lack merit. Ber-nabela has not filed a pro se supplemental brief, despite receiving notice of his right to do so, and the Government has declined to file a responsive brief. We affirm.

We reject Bernabela’s suggestion that his plea was unknowing and involuntary. The magistrate judge, to whose jurisdiction Bernabela consented, complied with Fed. R. Crim. P. 11 in conducting Ber-nabela’s plea hearing, and we discern no basis for questioning the knowing and voluntary basis for Bernabela’s guilty plea. We thus affirm Bernabela’s convictions.

Because Bernabela did not” object to his career offender'status in the district court, we review this issue for plain error. See United States v. Plano, 507 U.S. 725, 731-32, 113 S.Ct. 1770, 123 L.Ed.2d 608 (1993). To be a career offender, Bernabela must have been at least eighteen years old at the time of the instant offense of conviction, the instant offense must be a felony that is a crime of violence or a controlled substance offense, and Bernabela must have at least two prior felony convictions that are either crimes of violence or controlled substance offenses. See U.S. Sentencing Guidelines Manual § 4B1.1. Our review of the record confirms that Ber-nabela was properly adjudged a career offender based on his prior convictions for controlled substance offenses.

In accordance with Anders, we have reviewed the entire record and have found no meritorious issues for appeal. We therefore affirm Bernabela’s convictions and sentence. This court requires that counsel inform Bernabela, in writing, of the right to petition the Supreme Court of the United States for further review. If Bernabela requests that a petition be filed, but counsel believes that such a petition would be frivolous, then counsel may move in this court for leave to withdraw from representation. Counsel’s motion must state that a copy thereof was’ served on Bernabela. We dispense with oral argument because the facts and legal contentions are adequately presented in the materials before this court and argument would not aid the decisional process.

AFFIRMED