How to enable TRIM on a MacBook Pro, and What is TRIM?

I'm using various SSDs on a 15-inch mid-2014 MacBook Pro Retina having changed the original SSD for a larger size using an adapter board: all are working fine with TRIM enabled. I use external SSDs on both USB 3 enclosures and in Thunderbolt 2 enclosu

SSD TRIM, known as an Advanced Technology Attachment (ATA) command, tells an SSDwhich data blocks it can erase with the help of the operating system since they are no longer in use. In addition to the ATA interface, TRIM is also available for SSDs that su

Apple macOS enables Trim for internal Apple SSDs only. Advanced users can also enable Trim for USB connected SSDs with Apple APFS formatted partitions.

了解Windows和macOS上對USB隨身碟、記憶卡和SSD的TRIM支援 | Sandisk

當您想要從啟用 TRIM 的 SSD 還原資料時，以下是幫助您恢復已刪除的 TRIM SSD 資料的最詳細步驟。

从OS X 10.10.4开始就原生支持在第三方 SSD 固态硬盘 上开启 TRIM 了。 早前版本的系统默认仅支持苹果自家的SSD，第三方SSD要开启TRIM需要借助Trim Enabler等工具的，我们这里不做讨论。 TRIM的优点：TRIM 是系统级别的命令，允许操作系统和固态硬盘更好的通信，确定 SSD 上哪些区域没有被使用，并准备好擦除和重新写入。 对于固态硬盘（SSD），由于闪存的固有特性，更新页之前必须要擦除相关块。 如果不开启TRIM，在文件系统中早已被删除的块在物理上还存放着原来的数据，