Tam's comlink, also referred to as 533's comlink, was a C1 personal comlink owned by the human female Tamara Ryvora. In 34 ABY, after Ryvora joined the First Order to become a pilot, the comlink was used by her superiors, Agent Tierny and Commander Pyre, to track the location of the refueling station Colossus to the Outer Rim planet D'Qar.
While they failed to destroy the station, Ryvora was praised for her device providing its location. After Tierny stored the comlink in her office, the pilot eventually recovered the device as part of her plan to leave the First Order and used it to contact her former colleagues Kazuda Xiono and Neeku Vozo.
Tam's comlink, also known as 533's comlink, was a C1 personal comlink owned by the human female Tamara Ryvora. It was gray-and-silver in color and featured a roughly cylindrical shape.

The comlink was owned by Tamara Ryvora by 34 ABY. After Ryvora joined the First Order to become a pilot and was designated DT-533, her former colleague on the refueling station Colossus, Kazuda Xiono, wanted to contact Ryvora and explain why he had not told her that he was a Resistance spy. His fellow mechanic, Neeku Vozo, noted that, while risky, he could attempt to send a message to her on her personal comlink. The Ace pilot Torra Doza reflected that the endeavor was dangerous but possible, as Xiono would be unaware if she received it or if the signal was intercepted. Xiono felt he owed Ryvora an explanation and sent the message, which Ryvora ultimately received while she was by her locker in the First Order barracks on the Resurgent-class Star Destroyer Thunderer. After the comlink beeped, Ryvora picked it up and played the message, though she quickly became angry with Xiono and turned it off, throwing the comlink to the ground.

She eventually stored the comlink in her locker. Sometime after, she opened the locker and quickly hid the device under her flight helmet as two fellow pilots walked past. After they left, she took her comlink out and listened to the message again, though her fellow pilot, Jace Rucklin, arrived and overheard the message. He then questioned if the voice was Xiono's, inquiring if she knew what her superiors—Agent Tierny and Commander Pyre—would do if they found out she had withheld the intel from them rather than give them the device.
Ryvora questioned if he would turn her in if she did not give the comlink up, and Rucklin continued pressuring her, reminding her of Xiono lying about not being a spy. Afterward, Ryvora and Rucklin traveled to the Thunderer's bridge, where she informed Tierny and Pyre that Xiono had contacted her on the comlink, handing it over to the agent. Tierny then stated that the First Order would be able to put it to good use, with which the commander agreed. After Tierny gave Pyre the comlink, he walked away with it to be decrypted.
Shortly after, when the decryption was complete and Tierny had listened to Xiono's message, a lieutenant informed Pyre that they had traced the signal from Xiono's message back to the Outer Rim's Ileenium system, where the Resistance had a base on the planet D'Qar. Pyre wondered why the Colossus would go to D'Qar, as the First Order had wiped out the base there, to which Tierny responded that it was possible the Colossus's crew were unaware of the D'Qar base's destruction.

As the Thunderer headed to D'Qar, Tierny and Pyre went to the barracks, where the agent personally congratulated Ryvora for providing the intel being used to discover the location of the Colossus. She then told Ryvora that she had listened to the comlink's message, stating that it must have caused her great pain and anger to hear his "heartless" admission of betrayal and adding that she was not sure how it would make Ryvora feel except reinforce she had made the right choice to join the First Order. While the First Order was unsuccessful in an attempt to destroy the station as it escaped into hyperspace, Pyre insisted it was only temporary and Ryvora was instructed to report if Xiono attempted to contact her again.

Pyre later recalled the comlink's use to track the Colossus while speaking with Ryvora's instructor, Lieutenant Galek. Later that year, as the Thunderer traveled to the Outer Rim planet Dantooine, Ryvora visited Tierny in the latter's office and spoke with the agent. Tierny picked up the comlink and asked the pilot if she recognized it, to which Ryvora responded that it was her comlink. The agent then admitted to the pilot that she had previously had doubts about her, but after Ryvora had given her the comlink those doubts were cleared, praising her for not believing Xiono. While informing the pilot about her life before the First Order, Tierny opened a drawer on her desk and placed the device inside as Ryvora watched.

Not long after, the First Order carried out a bombardment of the Aeos system in the Outer Rim after the native Aeosians had previously assisted the Colossus. In response, Ryvora planned to escape from First Order service. To do so, she acquired the help of a mouse droid designated 5-L. The two broke into Tierny's office, and the pilot retrieved her comlink from the drawer before leaving the office undetected despite the agent returning. After arriving at the barracks, Ryvora connected her comlink to 5-L and sent a message to Xiono using a mechanic's code she had developed with Vozo before joining the First Order. Her message instructed Xiono and Vozo to meet her in three cycles at the Mid Rim planet Castilon.
The message reached Xiono, and though he did not recognize the code, Vozo deciphered it as the one he and Ryvora had created. Xiono, as well as the pilot's former employer Jarek Yeager, departed to meet with Ryvora. While the pilot was carrying out her escape, Tierny returned to her office and discovered the comlink was missing from her drawer. Shortly afterward, Ryvora met with Xiono and Yeager on Castilon, ultimately deserting the First Order as the Thunderer was destroyed during a battle in the Mid Rim's Barabesh system.
Tam's comlink first appeared, albeit unidentified, in "Into the Unknown," the first episode of the second season of the animated television series Star Wars Resistance, which aired on October 6, 2019. Prior to the episode's release, the comlink was depicted in a season trailer released on August 14 of the same year. The device was later identified as 533's comlink in "A Quick Salvage Run," the season's second episode, which aired on October 13, 2019. The accompanying episode guide later identified it as Tam's comlink.